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Perry, you are comparing sports cars with pickup trucks. The Mk2/R295 is certainly a reliable regulator but it doesn't even compare performance wise and is not much different than what you can typically rent. They are used in rental fleets because they are much less susceptible to abuse than...

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...

I don't own an Edge or HOG regulator but I have owned many Apeks regulators over the years and the Edge/HOG regulators seem to be clones of Apeks. They should provide excellent breathing characteristics, certainly at recreational depths, probably even at technical depths. The Edge models are...

The D400 is an awesome reg. I have serviced them for years. They are not suited for amateur service. The adjustment procedure is awkward, tedious, and somewhat difficult if you don't know what you are doing. However, once properly tuned, you can pretty much leave them alone until you start...

The HOG and Edge gear 2nd stages are Apeks clones. Apeks 2nd stages must be attached to hoses using two wrenches, one to hold the locknut still while tightening the hose. If you don't do this, it is very easy to twist the valve body out of position and will cause a freeflow at about 10-15 feet...