I've used several over the years, and the best performance I've gotten is with a Kicks out of my 870 supermag. No matter which choke you try, you are going to have to try several different loads and shot sizes to find the perfect combo for your gun and choke. Just because you have a 3 1/2" gun and a Kicks choke, doesn't mean you'll get identical performance to my set up, or that my performance will match the next guys.
My particular gun really likes 3" Hevi-shot #5s, but my brother's 11-87 doesn't pattern them well at all. I haven't found a 3 1/2" that patterns as well as the 3" in my gun (and don't know that it's needed-the 3" kill them dead as a door nail as far as I have any business shooting at 'em
) You just have to experiment with several different chokes/loads and find what works best for you. It's an expensive proposition, but if you have several buddies and each buys a couple of boxes of different brands/loads it really helps out with the financial aspect of patterning your gun.