RE: Best Turkey Gun?
I have and LOVE my Browning BPS. I like using 3.5'' for turkeys. No, you don't have to have it, but I like it. I would go with the 24'' barrel. As for camo, again, something you don't HAVE to have. Mine is the black Stalker.
You are going to get many different opinions b/c there is no "Best". Just "best" that he/she likes.
The Mossberg 835 is a great out of the box turkey gun. I had one and it was the only gun I've seen that could hold its own against my BPS (patterning).
My next shot gun will probably be the Mossberg 935. They are all personal choices. I am sure you wouldn't go wrong with any.
If you have the money, I would suggest the BPS. I know several people with them and can honestly say I've never heard any complaints and I'm not being biased b/c I have one.