I'll group ride with a large if I have to, but I prefer solo or small groups. I like to stop when I want to, especially to take a photo. For me. that trumps any advantage of a large group ride.
Riding with a mixed group (not tooooo large) can be fun. From Harleys to Hayabusassss it's all good. Remember to ride at your own pace. I often found riding behind a more skilled 'cruiser rider' was a good learning experience...ALSO off-duty/retired police officers are good mentors...PEACE RIDE SAFE If you're in the Central California area you may want to check out South Bay Riders.com forum...they often post rides
I enjoy riding with other people. It makes the trip more interesting, and you have someone that can help in case of some emergency.