RE: O/U for under $700
Well, that depends on how you define quality. The Baikal will probably hold up to anything %90 of the shooters out there will put it through. The fit and finish isn't great, but they are built fairly well. If you mean quality in terms of long polished forcing cones, mechanical trigger, beatiful wood and engraving, flawless fit and finish, and a famous name manufacturer then yes, it probably is unreasonable to expect it for under $700, but it is nice to dream.
Gordon