I like what Munjibunga said, as long as you stick with the middle to higher ground as far as quality goes, you should be fine. Also, shopping used is a great bet, and as stated, from the right place like Guitar Center or Sam Ash. In the end your ears will be the judge. I would aim for a Gallien Krueger, Hartke, some of the new Peaveys coming out look sweet (the micros they showed off at NAMM), Ampeg for sure.
I was in the same boat you were in a little over a year ago now and I found myself in a Sam Ash walking out with a used SWR 750x. Thing sounded awesome and had some cool effects built in. I brought it home and enjoyed it very much. Then I realized I hadnt done my homework on power ratings and cabs. Long story short, I took the SWR back for something with a little more power and got a GK 1001RB. I couldnt be happier today. I also bought an GK SBX+ 410 that had all kinds of issues and ended up returning it after them trying to repair three times. I cut my losses and went somewhere else and got a Neo 410. In short, make sure you do your homework on power ratings and cabs too. For this will make a big difference in the amp you choose to go with. Good luck!