QSC, Crest, Crown, Peavey, Carvin and even Yorkville all make solid poweramps in all price ranges, from a couple hundred watts to over 5000w and from a few pounds to over 50lbs.
Buy enough power and make sure your input sensitivity matches up with your preamp would be my advice.
Honestly, there are so many options out there.
Personally, I think the Crest ProLite 2.0 is an amazing amp. Cheap at around $350US, light at 11lbs, 5 year warranty, powerful at up to 2000w bridged at 2ohms (300 a side at 8ohms) and mine has been rock solid so far.
Fodera l Fender
Jule Amps Monique l Bergantino