Those are pretty heft for their size. I'm not familiar with speaker stands, not having had need for them, but maybe someone else can chime in with some good advice.
The Infinity Quantum series is notorious for having those 5 ohm pots going bad. I have a pair of Quantum 2s and all three of the 5 ohm 25 watt pots in one of the speakers are shot. Maybe while you're enjoying your Tannoys, you can spare some time to fix up those Qbs, which are decent speakers for what they are. Just be sure to share your knowledge of where to get those parts if you luck out on them.
My Berkeleys use the HPD385A driver which combines all the good things about the older drivers (pepperpot tweeter, alnico magnet) and combines them with the girdacoustic struts to remove the midrange coloration that so plagued these same vintage designs. Unfortunately, their weakness is in the use of foam for the surrounds. These Tannoys came into my possession with one driver exhibiting severe voice coil rub. I eventually managed to figure out a solution to this by unbolting the spider and re-centering the VC. I think I can hear a difference between the drivers, though, so I'll most likely be changing out the surrounds with appropriate replacements obtained from AK's own Gordon W when I've the time to spare. I will say this, the 15" drivers possess incredible dynamics, so much so that transients can come with startling impact. More than once I have half-jumped out of my seat when a drum hit came unannounced or a gun was fired in a movie, something that not even my Maggies could do. Ah, but why am I telling you this? You have vintage Tannoy too, so you experience this pretty much everyday.
Those are nice looking Tannoys you have there. If you don't have any luck here with stand suggestions, perhaps someone at the
Yahoo Tannoy Group. Right now, several members there are embroiled in a bit of a fight that came about from joking about the names of two members, 'Mike Hock' and 'Mike Hunt.' Don't worry, generally the atmosphere there is more mature.
Good luck on finding good stands.
- JP