Here is my 2 cents on Titanium regulators. I have over 10 years of regulator service experience. Titanium is very light, very strong, and very expensive. It is not compatible with enriched air. A brass regulator is much less expensive, compatible with enriched air, and breathes just as well if it is the same basic model. The weight difference is not very significant when attached to the rest of your scuba gear considering the weight of tanks and weights. The only place it might make a difference is when flying somewhere and keeping your weight to a minimum. I carry my regulator on to the plane with me so weight restrictions really don't apply. Save your money, buy a top of the line brass regulator and spend the difference on going diving. BTW, I have heard that the new Stainless model from Atomic is half the price of their Titanium model, it is just as corrosion resistant, and because stainless is strong, it is thinner and almost as light. It costs $200 less than the Epic Ti. BTW I am not affiliated with Atomic. Personally, I dive an Apeks which is where many of the Edge/HOG regs are derived.
---------- Post added July 18th, 2013 at 05:04 PM ----------
Here is my 2 cents on Titanium regulators. I have over 10 years of regulator service experience. Titanium is very light, very strong, and very expensive. It is not compatible with enriched air. A brass regulator is much less expensive, compatible with enriched air, and breathes just as well if it is the same basic model. The weight difference is not very significant when attached to the rest of your scuba gear considering the weight of tanks and weights. The only place it might make a difference is when flying somewhere and keeping your weight to a minimum. I carry my regulator on to the plane with me so weight restrictions really don't apply. Save your money, buy a top of the line brass regulator, keep it rinsed with fresh water, and spend the difference on going diving. BTW, I have heard that the new Stainless model from Atomic is half the price of their Titanium model, it is just as corrosion resistant, and because stainless is strong, it is thinner and almost as light. It costs $200 less than the Epic Ti. BTW I am not affiliated with Atomic. Personally, I dive an Apeks which is where many of the Edge/HOG regs are derived.