I personally was looking for an Ampeg svt, and I found a svt preamp. It was what I was looking for but it doesn't sound like what you want
Anyway, I found a good deal on the matching 1500w ampeg power amp so thats what I got.
Pick the pre based on what your looking for. Good names are SWR, Ampeg, Aguilar, etc. Check out an issue of Bass player or something. One pre that always got good marks was the Demeter.
As far as power amps go, any descent power amp that you would use in other situations would work. If I was shopping for an amp now, I think I might go for one of those small 1-rack space digital switching amps to save on my back.