Do you have your heart set on an O/U at this point? If not, I suggest you look at used semi's. I saw a used excellent condition Remington 1100 skeet at Ellwood Epps a few weeks ago for something like 360$, which is quite a bit less than one of those new, cheaper O/U's. 1100's have proven themselves to be one of the most reliable semi's ever made. That being said, I own a Stoeger Uplander sxs( basically a sxs version of the condor) in 20 ga for bird hunting and I can't complain. I got it used really cheap and although its a basic, no frills gun, it works. Although I own a Mossberg 500 and love it, I cant speak to the quality of the reserve. Ive heard mixed reviews.
