I mirror what
mauser06said. I have that gun (except mine the barrel and receiver is camo but that's because it's older) I love mine!! Mine shoots Federal Premiums the best and I have a Hastings extra full choke in it. The Rem choke mine came w/didn't pattern very well. Speaking of patterns. The last time I patterned it I had 300+ (308 if my memory serves me correct) pellets in a 12in circle at 30yrds.
As a sidebar of info, I've usedthree other shotguns before (mossburg, winchester and another 870)for turkey hunting but this shotgun is the only one that I've ever had where I have yet to have a turkey flop after I shot it. Kills 'em dead.
That's my pick. But in the end you'll probably just need to shoot a couple to find out what you like the best.