RE: 390 vs 391.
The Beretta 390 is an excellent field gun. I bought one last year and have shot many a rooster with it since. It swings and points well, cleans easily (not as easy as a Benelli) and just plain shoots great. I wouldn't say that it is a lower quality version of the 391, just not as new and doesn't have as many bells & whistles. You can't go wrong with this gun IMHO.