I hate to muck up the thought process here, but going back to the original posters question, the answer is NO. I have dove my Atomic Titaniums for 8 years now, swapping back and forth between air, nitrox and trimix, and never encountered any problems. I plan to get a lot more dives out of them and have no plans to consider any sort of upgrade. This may not agree with how everyone feels, but I am simply sharing some facts here on what has worked for me over several thousand dives.