My RG2500ICE will be delivered today. I'll comment tonight after I get it on the tank. I've never heard a bad thing about this setup, it's VERY popular here in cave country, Dive-Rite has an excellent reputation for customer service.
Now, here is why I did NOT consider ScubaPro:
1. Prices are kept artificially high by SP by only allowing 10% discounts at the LDS, and online sales are forbidden if you want the warranty.
2. By cutting out online sales, customers have far fewer choices of where they can buy items from and who they can support.
3. SP Parts may be plentiful around the world, but only for dealers. For those who choose to do their own service, SP does not support them.
4. Some say the piston designs are more apt to freeflow in cold water. I don't dive cold water (yet) but this was a concern to me, and apparently to SP as well, which is why the Mk17 was introduced.
5. I don't care for my local SP dealer.
6. Dive Rite's factory is 90 miles away from me.
7. I've met the owner of Dive Rite and you can email the guy. Try that with SP.
All that said, I am NOT saying ScubaPro is a bad company. Nor am I saying they make bad products. In fact, I think they make very fine products. But their sales tactics, and closed mentality do not sit well with me. I have the same problem with Aqua-Lung, and won't use their products either. I think these two giants of the industry are trying to use their name recognitoin and influence, to dissuade fair competition, and I won't support them. Ok, I do have Jetfins, BUT THAT'S ALL!!
I wish you the best of luck in your choice. I have no doubt that a proper regulator from either company would work well for you. You may want to consider the Mk17 if you go the SP route as others here have mentioned.