RonFrank:ScubaDiving magazine does some nice reviews on regs.
http://www.scubadiving.com/regulators
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If price is your main objective, the Zeagle Envoy is a great reg for the $$$, but it is not sealed.
I second that. scubadiving has a ton of reviews and I used them extensively when deciding on what to buy. I went with the Envoy as my first budget reg. Great price and does the job nicely. When I'm ready to upgrade, it will become the wife's reg.