Actually, I bought my Omega II's in Jan 1988 so they are about 22 years old. I just rounded off.
As to the Edge regulator, Dolphin Scuba has a somewhat better price. Not a lot but something...
What Dolphin also has is the HOG regulator. They have both the standard and cold versions of the 1st stage as well as the 2d stage. Considering how highly it is regarded, the price is outstanding!
Dolphin Scuba Center - Scuba Sales, Trips, Service, and Education.
A first stage and two 2d stages for < $500. Not as cheap as the Edge at $300 but it should compare well with the Atomics and Apeks. You need to add something for the hoses that are not included.
Richard