I just bought a Xoom a week ago off Newegg for $339 then got all the official accessories for super cheap off Newegg as well. I couldn't be happier. It more than holds it's own with Jelly Bean, every bit as fast as my Galaxy Nexus. I was going to hold out on the Nexus 10, but I needed a tablet now and didn't want to wait on an unconfirmed device. Honestly I'm happy I didn't wait. It's a beast of a tablet. I was thinking about the Transformer Infinity as I am an Asus fanboy and always use Asus motherboards in all my PC builds, but I just couldn't justify it since I could get the Xoom for $339 and know it will get every Android Update before any other tablet.
The Infinity is nice though, 1080p screen, etc. Though They'd have to really do magic with the scaling or else I'd fear a lot of Android App's wouldn't look very good. I know Apple has the new iPad scaled big time, same with their Mac Books.
I looked at the Nexus 7 too, but it didn't have the memory capacity I need, lacked a camera, and has a phone UI - though the UI isn't a deal breaker for us on this forum. Though I don't think Google movie rentals work on rooted devices, which would stop me from rooting.