I had a 90's ampeg head that sucked too...The Carvin equipment I've had didn't stay
long either, It was clean but in a dry sort of way...no flavor or punch.
It sounds like your quest might not be over.
In the price range You might keep a look out for a Peavey amp...I have heard some good country tones from players using Peaveys with the Black Widow speakers . e.g. Session 400 , and this one looks interesting:
http://seattle.craigslist.org/see/msg/2999886689.html I'd try to keep the Acoustic if it makes you Happy
(Peavey distortion in my experience can be gritty to piercing)
Elwood