I don't ride regularly with either club as I;m often away on weekends, but I have done a bunch of rides with the NYCC - (I also did the C SIG and then B SIG the next year). I've only done 2 or 3 rides with the WCC. I have done the slower B rides in the NYCC led by Hal E. and also with Paul H. I found the WCC rides to be more "rigorous" - for instance I did a B- ride with the WCC and had trouble keeping up ( the group of guys I rode with were extremely nice and patient & not in a rush to hammer away as it was early in the season). If I do ride with them again I will choose a C or C+ ride. Someone suggested to try rides led by Rachel Diamond with the WCC but I haven't done so yet. She leads C rides early on and I think B later. I'm older, not a veteran rider, and not fast! I need a lot of warm up time so the NYCC rides are good for me . That first 5 or 10 miles you need to ride to get out of the city and past traffic and traffic lights gives me a nice slow warm up. When you ride in mid to northern Westchester you don't have that. It's just something to keep in mind if you do a westchester ride.