first timer which regulator?

[beeger]

Jason has a good point. Rent some different gear at different shops and see what you like. But keep this in mind: the performance of a first or second stage can be *drastically* altered by how it is tuned by the service technician. Cranking a reg way up for high air flow can make it seem to breathe better, but can lead to freeflows (especially in cold water), positive pressure breathing (which some people seem to like) and a frequent need for some servicing/tuning. Tuning it down can help prevent freeflows and make the reg more cold water compatible, deliver more stable performance, but also make it seem to not breathe as well. While the manufacturers publish specs to use when servicing a reg, these are not always followed because the technician will usually alter the tuning based on experience (this can be a good or bad thing depending on the technician).

Now that being said I've had very good luck with some of the current Apeks and Aqua Lung models. I know others who speak well of the Zeagles.

When you look to buy a reg consider not only the manufacturer but who will be your technician/shop. The relationship is an important one and you should feel comfortable not only with the brand/model but who will be standing behind it.