I'm looking to purchase a power amp, and need to narrow the field--there's lots available!! I already have a homebrew Alembic F-2B Plus that I'm going to use (The "Plus" in this preamp is a cathode follower stage at the output, and it's a single channel, not two like the real thing. Sounds fantastic) My cabs are loaded with an Eminence Kappalite 3015LF in one and a Gamma 12 in the other for a total load of 4 Ohms. I play mostly classic rock with my trusty passive US Jazz Bass, with the occasional country tune and 50's ditty thrown in for good measure. I only play out about every other weekend, so I'm not looking for extreme high end wattage or price. I've earmarked about $300 for the purchase, and I'm considering both used and new poweramps. Lightweight would be nice, cuz I'm not a kid anymore, but I'm concerned about reliability and price. I simply can't justify tons of money spent on the purchase. I've given thought to a used Crest FA901, or something like that or even a new XLS1000. I'd like to stay with Crown, Crest or QSC, unless there's something better and two rack spaces would be better than three (or one). I'm currently using my old Hartke 3500 MosFet head that seems to have enough power, but sounds poopy compared to the F-2B clone fed into a Fender M300 monitor amp that I have kicking around. The M300 sounds nice, but is a little on the lightwatt side with only 220 Watts RMS @ 4 Ohms. I'd really appreciate hearing people's opinions on this--feel free to name Makes and Model Numbers!! Thanks!