I'm looking into buying a new choke for my 870 super mag. I'm lookin in the $20-$50 range. I have the factory turkey choke, i't not really inpressive. I'm lookin at buying the undertaker, orthe jelly head, and finally the chomp-N-Choke from cabelas. I want to easily kill a turkey at 45-50 yards. I don't want to shoot the heavy shot either, just normal 3.5in turkey loads. What's your opinion