I'll second the vote for a Scubapro Mk 2 R190. They provide enough air for dives to recreational limits and can be tuned to provide very easy breathing.
The design is a descendent of the original Mk 2 and Mk 3 designs and is a simple, durable and easy to maintain design that offers both quality and reliability. There are only 2 dynamic o-rings in the regulator and both are only exposed to intermediate pressure rather than high pressure so there is very little to go wrong. The TIS kit also works very well on the Mk 2 and divers in this area use them on ice dives with no problems.
If you ever get too "technical" and exceed it's abilities as a primary reg, it will still make a superb deco reg so you are unlikely to ever want to sell it.
The design is a descendent of the original Mk 2 and Mk 3 designs and is a simple, durable and easy to maintain design that offers both quality and reliability. There are only 2 dynamic o-rings in the regulator and both are only exposed to intermediate pressure rather than high pressure so there is very little to go wrong. The TIS kit also works very well on the Mk 2 and divers in this area use them on ice dives with no problems.
If you ever get too "technical" and exceed it's abilities as a primary reg, it will still make a superb deco reg so you are unlikely to ever want to sell it.