AS Challenger mk 2 vs. Avid Diva 2 sp vs. Rega P9

Yes Dayglow, I scooped up the only Rock 7 I have ever seen used. I previously had an Amadeus, and agree with Greene's assessment of the two tables, though note that Greene was using a Rega 301 arm. Trough or no trough the table needs a better arm than that. I run it with a Moerch DP-6 with a ZYX cart.

Power is not a wall wart. And motor doesn't seem a problem to me. I haven't noticed power cord differences but only briefly played with that. If you are worried about the power, maybe pair it with a VPI SDS?

Build is much more substantial than the Amadeus. You can see my comparisons between the tables on AudioCircle.

Just noticed that Steve Guttenberg cited the Rock as one of his 2012 Top 10 on his CNET blog.

The Amadeus GTA is vastly different in a build quality sense when compared with the MDF based Amadeus. I don't think the standard Amadeus has poor build quality, but I agree that it is not "substantial" feeling. I was surprised how much better the GTA is in this regard and it does sound better too.

Vortrex, Did you think the GTA was better in any specific area? I haven't done any comparisons, but I could still upgrade my order.
Word has it that the upgrade path is like:
Simplex > Amadeus= 10% better, Amadeus > Amadeus GTA= 5%....
Sorry to steal the spotlight, but this info could prove useful to the OP. Cheers, Don

if I had to put a number to it I'd say the GTA is 5-10% better, most notably for me is the bass and an overall "bigger" sound. I'm also hearing some slight nuances that I never did before.

And once you get to the GTA or a Vortrex, you are at the end of your upgrade chain for analog except for the cart and phono stage. For better or worse. The Well Tempered tables sound great but you lack a tonearm upgrade option. Not that there aren't other areas of a rig that can be improved. The Well Tempereds sound great. But this is worth pointing out. It could be a plus for some. For theb tweakers, maybe less so.