A well decked out DP-80, with corresponding quality plinth tonearm cartridge, should come very close to a Technics SP10Mk3. The DP-80 was one step down from Denons DP-100 statement table, the SP10Mk3 was Technics statement table. In a matchup between the two statement tables I'd lean towards the Denon having the edge.
I would speculate that the SL1200 MK3 is no match for a DP80. JMO.
But both of those tables are so nice to a point of dimensioning returns where I wouldn't expect them to sound different. It would all be up to compliance of the cartridge at that point.
Wheres Mr Pig when you need him. In the thread "Denon dp 75/80 owners club" he talks about comparing the SP 10 to the DP 75.or 80 I forgot He has owned both at the same time I believe. You may be surprised. Oh wait a minute he's out in the yard chasing those nasty chickens.
He’s never touched a MK3 AFAIK.
A well decked out DP-80, with corresponding quality plinth tonearm cartridge, should come very close to a Technics SP10Mk3. The DP-80 was one step down from Denons DP-100 statement table, the SP10Mk3 was Technics statement table. In a matchup between the two statement tables I'd lean towards the Denon having the edge.
I also wanted to explore suspended tables, and direct drives by their nature do not lend themselves to this architecture well. There have been some uses of sprung suspension with direct drive, but its a rarity,.
I would also prefer the Denon, even though a SP10MK3 is a rare, massive turntable that is surely the desire of many people.
But the Denon uses an AC motor that (in my view) is intrinsically superior to the brushless DC motor on the SP10.
I wouldn't say they "don't lend themselves to this architecture". More like "they don't need this architecture", in my view.
Suspended tables are almost a necessity on belt-drive turntables, because you need to isolate the motor to prevent rumble. Sometimes only the motor is suspended, sometimes only the platter is suspended, many times both things are suspended.
On direct drive turntables there's no need to isolate any motor, the motor is fully coupled to the platter. So really no strong need to suspend the turntable except for isolating it from external vibrations.
I own a Sony PS2251 and it is a suspended DD table: The inner frame "floats" on three very nice springs, and holds both the turntable and the armboard. (BTW, the Sony and the Denon are very similar in that they use an AC motor, and in that the voltage, instead of the frequency, is used to vary the speed).

Glad to hear you have tables you like. That is the great part of analog, we have so many choices to make on how we spin our vinyl.
I appreciate the tables I have and find the strengths of belt drive to be preferable.
It's ok, i don't have anything against BD tables, when well designed.
Did you sell your Denon DD?
My recent experience has clearly established that mass has a significant role in PRAT.My bet is on "torque"
And yet not enough. I wonder what it is the DP-80 does that the SP10 does not. In their basic form, these both come with no plinth and no arm.I owned both an SP10 Mk11 and a Denon DP-80 simultaneously and I now only own the Denon. Enough said I guess