All of the current makers provide a turkey model or at least a version adaptable to turkey hunting. Any of them will give you good results with the right choke and load. I'm partial to the BPS myself, but you'll find any number of folks equallyenthusiasticabout their Mossbergs, 870's, 1300's, Benelli's, etc. Pick a model that you like and fits you well. Go out and try some chokes and loads. It's a process you'll have to go through anyway.
Good luck, and good hunting.