Its very true that digital or SS preamps sometimes sound best with SS amps.
mingincorn thiers tons of manufacturers that sell power-amps. Mesa, VHT, Marshall, hell most amp companies sell a poweramp. H&K and Peavey are 2 widely use cheaper poweramp makers. They both make a 50/50 type power amp that can be had for a couple hundred instead of the usual thousand+.
Power amps are always stereo. They give you 2 sides both with the same power rating. You can get a 2:90 or a 2:100 but thats alot of power. If you are going that route the Peavey 50/50 is probably the best way. Im assuming you cant spend 1k+ on a poweramp right?
Like I was saying a SS power amp may be a good way to go too. Cheaper yet.