George... let's put it this way...
There are a lot of people who advocate Apeks regulators, along with a BP/Wing system for recreational diving. Why?
It's not because the DIR folks tell them to. I'm not DIR. But I have dove with a jacket BC - never again. I like the fact that I've gone from close to 30 lbs on my belt to 6, by moving to a BP/wing. I like the ease in trim, and yes, ease in establishing better bouyancy control. There's no squeeze, and heck - it's Stainless Steel... it's durable as heck.
The wing itself makes a big difference as well - I started with a wing that would have been better for doubles, and got a dedicated singles wing (oxycheq, but Halcyon makes great stuff as well.)
If I were you - get an aluminum or SS backplate with a 30 lb Oxycheq single wing from COVCI - Chris at COVCI is an awesome guy who will do you right. He'll answer any questions you have and is really friendly. COVCI isn't a fulltime job for him, so he may take a day or two, but he's great.
Then I would look to
www.diveinn.com (aka Scubastore) and look at getting a set of Apeks regulators... if you're only diving warm water, you can probably just get an ATX20 with an ATX20 backup. The 40's are nice, too... I dive 50's, and I honestly can't tell the difference between that and an ATX200. They are fantastic, high performance regulators. They're also owned now by Aqualung, so you shouldn't have a problem getting them serviced. Another option I'm not too familiar with, but that many people around here seem to like are Scubapro regulators... I've dove with a few, but I would think an MK25 would be too much for what you're doing. I would also recommend getting a long hose and setting your backup on a bungee necklace around your neck... tons of threads on here explaining why it makes sense.
DiveInn can also set you up with a Vyper wrist computer, although there are a lot of other wrist mounted types out there... I dive an M1 from Mares, for example, but most of the time I just use it as a Bottom Timer. I wouldn't bother getting air integrated - if you get a BP/Wing, you can clip your SPG off to your left D-Ring nice and neat, out of the way. Air Integrated adds many $$ and you're pooched if it dies.
Don't accept the argument that this is "techy-gear." It's not. It's modular, high-performance, and comparatively low-cost gear. I think people disparage it as "techy-gear" because they're jealous.
