You can actually "get away" with US Acoustics amps in higher level setups, I consider it definitely the best of the three. Profile is a "bang for the buck" company that doesn't make GREAT stuff, but makes you happy about what you paid for the performance you get. Go Clarus instead of California in Profile. Jensen is ok, but I'd rather have the other two.
On the level with US Acoustics you might want to look into Ultimate.