whatever you buy, make sure you have the right fit, balance, and point naturally for you, oh and the good trigger
imho, when you are going into an over and under, i agree with the members that you are looking to spend at least $1000 and up, or wait till you want to invest that much.
i have found in the last 2 years, terrific used excellent shape beretta bl-3 and browning citori and superposed for aroung the $800 to max $1000. tight actions and like new finish and wood, because i find from this experience that as a general rule, owners of over and unders really take care and pamper them.
be patient and look for the good quality used buy, rather than take a basic over and under for around $400 or $500, and later enjoy it but get that urge to sell or trade up. happy shopping!