Re:What wetsuits you wear - 2007/11/05 14:03O'Neill Psycho 3/2 full.
I tested it out a bit this last fall. It was fine in 62-70 F water. But once I got down to 58-61 F, my time in the water was cut down from 2-2.5 hours to 1-1.3 hours. I did a little better when I picked up some gloves and booties though.
But the guy at the O'Neill surf shop was right, for the colder water in the Peruvian winter, you want a 4/3 or a Psycho 2.
I've been extremely happy with the wet suit so far, hopefully it stays in good shape for a good deal longer.