Any turntable forms a system with whatever it is sited upon, non-suspended like VPis and Regas, or suspended like Michells and Linns. Both systems need isolation from subsonic seismic resonances.
My experience with both unsuspended tables and suspended tables is that the unsuspended one can be very detailed and have all the PRAT stuff, but also can sound dry, analytical, and "closed-in". This has been how VPIs sound to me in my limited experience with them (only have heard Scouts and Scoutmasters). My Rega sounded a bit this way as well, but not as much as the VPIs I've heard. It got a lot better when I put it on an inner tube to provide some seismic isolation.
The suspension provides seismic isolation from subsonic frequencies and provides a marked improvement in sound, with the sound being much more open, airier and dimensional and natural-sounding. My Michell Gyro is on a suspended floor on a relatively inexpensive rack, and it sounds wonderful, very natural, musical and easy to listen to with excellent detail. Set up is really easy, an once you've got it set up, it's leave it alone and listen to it. I haven't touched mine in the 8 mos. since I bought it. Here's a picture from earlier this year. The Rega is on the right, it's sitting on a board resting on an inner tube.
Comparing to unsuspended tables with the suspended Michell, the Michell sounds fuller, more open, airier, with more full-bodied, liquid and natural presentation. You'll have to decide for yourself where your sensibilities lie.
If you do decide on a VPI, I'd recommend put it on a board resting on top of a inner tube. Another photo of the current set-up is attached.
The VPI Classic has a suspension/isolation built in its HRX feet and uses its great mass to good effect. With spring suspended tables, (like my Linn and others that have a non-damped type spring suspension, in contrast to the type of suspension exhibited by the Oracle Delphi's slightly damped springs) used in older homes, one must be careful about footfalls and the transmittal of those vibrations to the table, witness the use of wall mounts for many tables in just such instances....a solid, heavy mass table is less prone to oscillations that the relatively large vertical vibrations that some suspended floors deliver can cause, which may actually be more akin to a trampoline than a solid foundation, can deliver to the table...proper siting here is sometimes impossible without the wall shelf...
The VPI Classic is also unflinchingly neutral...an Ortofon 2M Black sounded almost screechy while a Benz Ace S sounded warm and comfortable...I also think your audition of the Scout and Scoutmaster may have been with cartridges other than Benz and may have led to that conclusion...i.e., I couldn't stand them either with various Dynavectors, the Grado Sonata was less than impressive and hummed, and after trying so many Benz cartridges and hearing just how each and every one of the Swiss made Benz just seemed to work so damn well on them have always tried to direct folks to them...the Gingko isolation bases on the Scout and Scoutmaster also took their performance and musicality up a big notch, too...even on a glass shelved heavy steel rack spiked to a concrete slab floor, but the choice of interconnect cables between the deck and the phono preamp can also tailor that sound...like by not using stuff like Nordost Tyr, for example, you don't need that amount of detail augmentation with these decks!
VPI's Classic is one of the most un-romantic, neutral tables I have ever heard in my 45 years of playing and working with analog things....as much as anything, careful system matching is essential with the VPI, and you can tailor the table from being an extremely cold and clinical machine to one with a warm, golden glow by careful selection of cartridges, interconnect cables, and phono stages...
I do like the Gyro, a lot, and have set up/assembled numerous ones, but still prefer the dead nuts simplicity of the VPI...plus, removing the arm for replacing a cartridge consists of unplugging the little Camac connector and lifting the arm off the table...the alignment jig supplied by VPI also makes cartridge set up and alignment easy even for a neophyte....
I also believe you about the Michell's sound in comparison to the Rega...while I may be a Linn owner, fan, and tech, I never "got" the Rega line...I set them up, I repair and service them, but just never have liked their house sound...in fact, I recently took a P-5 and using the exact same cartridge as I used on the Classic, set on the very same Finite Elemente stand with the same electronics, found that the P-5 lagged far behind the Classic in detailed musical recovery, in warmth, in PRAT, and the VPI was just plain flat out more musical....it took inserting a Stillpoints equipment stand under the Rega with the Stillpoints isolation feet and the Rega TTPSU, to make the P-5 anywhere near as good as the VPI and with those tweaks the Rega was far away more expensive...in other words, with a stand assembly that cost upwards of $1100 and a power supply that cost in the $500 vicinity, you're in the nearly $3k ballpark before cartridge to get lesser performance...and even then the arm would have done a helluva lot better with an Incognito rewire and a Michell counterweight...
The Rega arms (once suitably modified and rewired for all but their TOTL RB1000) are the best deal in their analog line...but, you can buy a Rega table, use it for a while, and as long as you keep all the packing and don't screw with the table, it will still have decent trade in or resale value...therefore they can present a not too onerous purchasing decision...
But if you're going to spend that kind of bucks over here in the States, where the Regas are not as economically feasible as in the UK, then I seriously tell folks to look to the American turntable companies as their best bang for the buck today. Even the Well Tempered is no longer made here but in China...bummer....which just leaves VPI....