I have been using DUI CLX450 for one and a half years. Initially I had it in few sizes too small and got a brand new one which is suitable for my height. Unfortunately, I am very slim and tall and I do not fill my new CLX well enough, so there is a lot of air and folds (telescopic torso). So the trim and mobility are affected, it is more difficult to swim in currents. If it fits you and you plan to do a lot of dives that require incredibly durable and reliable drysuit the CLX 450 is for you. I cannot imagine what will tear it or cause any damage, really. I use Apollo Bio Seals with my latex seals and I never had problems with tendonous wrists or neck (which are tendonous). And we are moving to a warmer climate, so I decided to sell my adored CLX and get a Fusion - I need a mobility, light weight and minimal air inside. I also want to be able to bend and get into the smallest crevises so I chose a Fusion and today Mike from Dive Right in Scuba made me very happy with his offer just as Whites promised. Now I will be counting hours until I get my Fusion.