I just received my RescueMax from Defender, and I am very pleased. It looks very well made and designed. I'm not worried about the USCG approval (maybe it's just too new) since I always have a seat cushion which meets the minimum requirement. It is well worth the current $40 price see link.
Opps, I see that the $40 price is no longer offered, but defender has it for $59 now. It is still worth it.