I had problems with a 200W Randall 2x12 combo, which I decided to get a refund for after it had been back for fixing twice, so I guess there's the answer to what I'd do. I ended up with my 5150-II, and frankly I should have saved up for that straight away instead of getting something in the mean time (although it's not a home amp, and yours is, so this doesn't really apply for you!).
Roo