I just bought this wetsuit today so cannot make a comment on durability, I'll try to write another review in a few months to comment on this. Having said that this suit so far is the BOMB! I bought the 4/3 version and it's not cheap ($470 with tax) but now I plan on surfing a ton this winter when previously I always seemed to find a reason not too. This is the warmest and most flexible suit I've ever owned. My hands and feet are now warm as well which is crazy, probably has to do with my body not shunting bloodflow from my extremities to keep my core warm. Previously was using a Bodyglove Fusion 4/3, the Psycho 2 is much warmer and very stretchy, almost feels like I have a 3/2 on. If you have the money, buy it.

On June 14, 2010 I bought my first wetsuit. There were different makes and the salesman was helpful.
After trying on about 5 I bought the Excel Infiniti. It fits perfect and the colors (dark blue, black and flourescent green) are striking and attention getters.
This suit cost $200.00 and to me it is worth it.
Note: I found it much easier to put on when you put those cheap plastic bags the supermarket puts your groceries in, on your feet and hands prior to putting on the suit. It slides on fast!!

Got the 4/3 youth suit as im short and seemed the best option. Bought in november it got me through the uk winter 3-4 degrees C. Real flexible suit that kept me warm enough for 2 hour sessions in january having to end sessions due to me hands getting cold. Cant complain about quality or durability so far, and as I said it got me surfing in the winter no problem. Great suit

Just bought the ladies Psycho 2010 model. First time on last weekend in Lake Windermere whilst learning to kneeboard. Did not feel any cold whatsoever and certainly didn't get wet in my body. Warm as toast and would recommend - not what I'm getting from the previous reviews.

The O'neil Psycho II to me has got to be one of the best wetsuits on the market. When I first wore no water got in for at least half an hour and when it did get it the suit somehow warmed it up. I used to surf for 2 hours but I had to get out because of the cold, now im in the water for something like 5 hours because I feel like im in a spa with the oniel psycho

i use my O'Neill Psycho Wetsuit for diving.
althought the inside says "not for diving", it is superb.
being such a good fit, no water being flushed, it stays so warm!

What can I say....AWESOME. I tried a few other suits, C-Skins, XCEL, and a quicksilver Cypher. But as soon as I put this on I knew I had to have it.
No other suit fitted aswell or felt as comfy. It's always gonna be a bit of a fight to get the thing on, but I found it much easier compared to other suits of the same style. Just make sure you keep all the velcro out of the way of the water barrier before putting your arms in, otherwise it's a hell of a struggle reaching behind you to sort it out. And you feel a bit daft asking a random stranger for a hand in the car park!!!
I live in North Devon and in this...It's toasty!!!

I have been using O'Neills wetsuits for years and recently got the O'Neill Psycho wetsuit and quite frankly, there is nothing better. Its everything you want it to be. The best wetsuit on the market! End of.

Perfect in every way possible!! i bought mine from online and it was delivered fast and for FREE which always helps.

The Oneill Psycho wetsuit is the wet suit i have ever worn. Its super warm and super flexible there is nothing bad about it.