I don’t know if you are or plan on become Nitrox certified but higher percentages of Oxygen and Titanium don’t get along. It would be alright for most Nitrox mixes I would just watch it the closer to 40% you get (probably won’t be a problem though in that use). Titanium also seems to be a bit of a marketing pitch, "they" claim they corrode less and you don’t have to service them annually, but I have chrome plated brass regs in my house older than me that are still in perfect working order and are barely showing signs of age; and about that annual service thing, O-rings, and diaphrams aren’t made of titanium and still require service. I do love my Apeks XTX regs though, but you need to check on what brands can be serviced locally in a timely fashion, and make a list of things you need in a regulator now and try to foresee into the future and what you’ll need then.