The best buy for all kinds of Clays shooting has got to be the Beretta AL 390. You can get them for about $650 if you shop around and you will never go wrong.
My wife shoots one, and many people that we have gotten started in clays shooting havebought them. I know of teo couples who got matching sets of 390s for Xmas this past year.
I suggest the 26 inch barrel.
If I wasn't set on shooting my Benelli just for the strange looks I get, I'd have one of these puppies.
If you want to spend an extra few hundred bucks, send it to Ballistics Specialties for a back-bore and a set of screw in chokes, then you'll really have the bees knees as they say.