Phil,
I have mine on Audiopoints. I actually have them under everything, including the battery power supply for the Teres! I also use Stardamp to control cover resonance. The cover is kinda flimsy, probably my only gripe about the Soro.
I've never heard the JMR's, so I can't compare them. But I have heard good things about them.
BTW, if you don't have the manual, email Peter Q and he'll drop one in the mail for you. Great guys, and he actualy answers all of my stupid emails!
As far as tubes go, be careful where you buy. Some places are EXTREMELY expensive. Deals happen on ebay, but here on the 'gon is probably the best place. At least you have a better chance of getting quality tubes from an audiophile.
Feel free to email anytime.
Joe