I rode a 4/3 O'Neill Psycho this year up in Michigan, and with 49 degree water and 39 degree air at 7 in the morning, the only thing that was cold on my body were my hands and toes. I would have even been able to ride for much longer if I had some closed toe bindings and gloves. It is, though, almost too warm to wear that thing when the temps get a bit higher.
Keep checking
http://www.whiskeymilitia.com/ a couple times a day for fullsuits. I have seen about 3 smokin deals on suits on that site in the past couple weeks that made me feel like I got ripped off...
and I wouldn't say it restricted my riding at all.
(Message edited by wakeslife on August 20, 2007)