More Shotgun Mussings

Not really another rambling about the use of them, but I'm thinking about tracking down a relatively cheap semi auto 12 gauge for three gun and the like. The Mossberg 930spx has most, if not all, of the features I'm looking for, but the safety location bugs me. I have a 590A1, and with a pistol grip stock, the safety is dang near unusable. I'm thinking of perhaps a Remington 1100 with a 20"ish barrel and ghost ring sights, but I am a poor college student after all, so price is a bit of a factor. Any thoughts?