I use the chokes that my guns come with at IC/MOD. They measure .008/.018 and have worked well for me. Being older and slower, they suit my style. I've hunted Woodcock for years and they have worked well also. With the leaves down now here in Michigan, I've had a banner week.
If I were to go from a MOD/Full I'd chose Skeet/ Mod. I read somewhere that a two choke difference in a gun is very usefull.
Karl