Mellotronists

I've been powering my studio with a 12-channel, 200W Peavey
XR-1200 that dates to about 1979.  Rather than try to fix up
the dried out caps and flaky grounds, I'm just going to dump
it on some kids and get something new.

Not wanting to spend top of the line $$$, I've seen two kinds
on eBay and and Guitar Center: Yamaha and Behringer.  They're
vastly smaller and more powerful than my old Peavey and I'm sure
would be far superior to the low rumbling noises I'm used to getting.
Yet...  I've heard from one party that the Behringer stuff is crap,
which doesn't surprise me to hear given its low cost.  Does anybody
have an opinion on this?  Could an amateur home hobbyist get
reasonable performance out of a low cost powered mixer such as the
Behringer or Yamaha, or do you strongly recommend going more upscale
and why?  FYI, my PA Cabs are 3-way EV S15-03's.

Thanks - anyone with an opinion may want to consider responding
privately to avoid cluttering the ng.