Former RBI users, I was wondering what reasons you might have had for switching from a SansAmp RBI to whatever you are now using. At the moment, I have financial constraints which make the RBI my favorite option for a preamp (2nd choice would probably be a 2nd hand Alembic F-1X: one great tone over flexibility?). Here is my current consideration/wish list (most of which I cannot afford, at the moment): * Tech 21 SansAmp RBI - [best bang for the buck?]: $300 * BBE BMAX: $399.00 * Alembic F-1X: $600 * BBE BMAX-t: $699.00 * Raven Labs USIP: $700 * Kern IP-777XL: $700? * Aguilar DB 680: $1600 * Avalon VT-737SP: $1750? * Glockenklang Bass Art: $2000?+? Please give me as much feedback as you can spare along with the preamps you've used since the RBI. THANKS!