Well I don't have any personal experience with it, but I've had a few people tell me they weren't overly impressed with the OMS workhorse reg, even for shallow water deco. I'm taking my deco course this summer as well, and started gathering up gear last year for it. What I did was hunt around online, and I found several places were blowing out the Oceanic OmegaII because it was being discontinued, so I snapped up two of them, and now have nice environmentally sealed, balanced diaphragm regs for deco, so maybe you should keep searching around and see if you can find something a little better than the OMS on special somewhere.