Rap, he was looking for recommendations around the $300 range, a DS-IV at $469 is substantially above that range.
Another solid performing cold water regulator for less than $300 would be a Scubapro Mk 16 R390. It is a very reliable cold weater regulator. I know several divers in the area who use it in cold water included some who ice dive with it including a couple of dive rescue teams.
Scubapro discontinued the Mk 16 last summer when the Mk 17 was released. This allows US Scubapro dealers to sell the Mk 16 outside of the normal price restrictions, so you may be able to find one at a very good price.
Scubapro is extremely good about continuing parts support, service and upgrades for discontiuned regs for decades so don't let the "discontinued" part scare you off. However, if the dealer wants full price for the Mk 16, go with the Mk 17 as the fully sealed design and other improvements are worth the slight increase in price.
One more option:
The Tusa RS-460 is virtually identical to the Scubapro Mk 16 R390 with only minor cosmetic changes. Tabata manufactures Scubapro designs and sells their own rebranded versions through TUSA once Scubapro's exclusive rights expire. So it is also another very good cold water regulator option in the $300 range (at around $320.) Like the Zeagle DS-IV and Scubapro Mk 16, it was also a "testers choice".
http://www.scubadiving.com/gear/regulators/2005's_best_new_breathers/2/
Another solid performing cold water regulator for less than $300 would be a Scubapro Mk 16 R390. It is a very reliable cold weater regulator. I know several divers in the area who use it in cold water included some who ice dive with it including a couple of dive rescue teams.
Scubapro discontinued the Mk 16 last summer when the Mk 17 was released. This allows US Scubapro dealers to sell the Mk 16 outside of the normal price restrictions, so you may be able to find one at a very good price.
Scubapro is extremely good about continuing parts support, service and upgrades for discontiuned regs for decades so don't let the "discontinued" part scare you off. However, if the dealer wants full price for the Mk 16, go with the Mk 17 as the fully sealed design and other improvements are worth the slight increase in price.
One more option:
The Tusa RS-460 is virtually identical to the Scubapro Mk 16 R390 with only minor cosmetic changes. Tabata manufactures Scubapro designs and sells their own rebranded versions through TUSA once Scubapro's exclusive rights expire. So it is also another very good cold water regulator option in the $300 range (at around $320.) Like the Zeagle DS-IV and Scubapro Mk 16, it was also a "testers choice".
http://www.scubadiving.com/gear/regulators/2005's_best_new_breathers/2/