I have a b2r into an avatar 210 and a genz benz 115. which is soon to be sold for an avatar 410. I might be buying a Pre / Power amp set up though. On january 16th, I have a gig with my band that I'm playing. This will be the decider on wether or not my amp head is loud enough to keep. It is going to be used with the 210 115 set up, because I wont have my avatar 410 by then. I REALLY want to buy a sansamp bddi, in perfect condition from a talk-bassist for 100 bucks shipped... but if I do this, and end up having to buy a power amp because my current amp might not be loud enough to keep, I am stuck with a not so good pre amp. If I knew what was going to happen in the future, I'd pass up this great deal on the bddi, and save for an RBI to go with a power amp. But then again, my head might be good enough for gigging, and I'd be buying the RBI which I dont need, where as I could just get the bddi for cheap.