it suddenly dawned on me that dove season is only a little under 4 months away!!! my current shotgunis the legendary 870 express in 20 gauge. I now feel the urge to obtain a little more firepower and go with a 12 gauge. I would like either a semi or over/under in the $500-$700 price range. What is my best bet and what is everyones opinion? I held a weatherby today which i believe was 600, not sure what model. All opinions are appreciated...