Which REL sub, R528 or B2


I'm planning to buy a REL subwoofer. It will be used in audio system mainly, but also in HT from time to time. I listen to jazz, vocals, occasionally rock. It will support Dynaudio C1. I'm considering the new R528 or B2 ( can get them at roughly the same price).
The new 528 looks better but is it as good as B2?
jkuc
Wolf garcia, apparently you don't have idea what you are talking about. you are the man. that's for sure.
Jkuc...please explain...no wait...please don't explain as I somehow doubt I'd understand...really...thanks.
All great points. The act of disappearing in one's system, is REL's best asset.
My REL is currently behind my left main with a fake plant on top of it, so it has disappeared even more. I AM interested in responses to my previous post (perhaps from somebody with reading comprehension ability) regarding sub level manipulation...any manipulators out there?