I've been using a 5/3 the whole winter and I never got cold. Though Ithink I'll stick with it until probably late pril, early May unless we get a bunch of really warm days like we are right now. I'm anxious to break in my new boardies though. They were a buy one get one deal!
I was heading out for my session on saturday and i remember seeing a fellow i followed out wearing what looked like a blue colored 3/2, with boots and gloves. about an hour later he came by me heading to the beach, teeth chattering, and muttered " F*ck This, i cant feel my hands, arms or feet! I'm out!" I was still rockin my 5/4, 7mil boots and gloves, and was able to stay out for about 3 1/2 hours. Didnt even get chilly... Personally i dont even see the point of owning a 3/2 in my neck of the woods, but hey thats just me.