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
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?
Wolf, I think that the REL sub has enough flexibility of control to blend seamlessly with any main speaker. I know with my SF GH's that they blend seamlessly with these speakers. The GH's are ultra fast, and even though i was concerned that this would be an issue with the sub, that has turned out not to be the case. OTOH, it did take a lot of adjustment and fine tuning to get the correct blend, BUT I did it by ear; I suspect if I can do that most anyone can. Plus, the hook-up of the REL directly to the amp is a MAJOR benefit as far as I am concerned.