www.cdnninvestments.com and download their catalog in PDF format.If you cant afford a 1000+ plus model there are a few here that are worthwhile . O/U and SxS shotguns require a lot of hand fitting and complicated machining to produce you don't need the engraving or gold inlays or fine filligrees on the operating lever but you sure want a solid gun especially if you don't want to buy one twice. I would look for a used SKB or Charles Daly (Miroku) which can be found. The Miroku Daly is the Japanese copy of the Browning Superposed and will last a couple of lifetimes and are usually reasonably priced. Another quality O/U is a Ruger Red Label if you go to any gunshows you can pick one up at a reasonable cost. I have a 28 gauge o/u Red Label that I wouldn't trade for anything right now in its price range.Ruger out of all the american manufacturers has the best customer service and will back up anything they made.