I have some of the Soundgear Instant Fits. Just about a full year into using them.
Pros: fit well and wear comfortably, have worn all day without problems, work great in the duck blind or dove hunting, have worn for upland and can still tell where the flush comes from, wind noise seems to be minimal, I am hearing things with them in that I wasn't before.
Cons: they seem to eat through batteries, so you always need extras on-hand, getting batteries changed in the field with cold hands isn't the easiest, they do change the sound some, but it doesn't take too long to adjust to.
I got mine pretty cheap at a Pheasants Forever banquet. At sale price, I'm happy with them. It didn't take too long to realize that the features found in the custom molded models would be great to have. The battery life has me really eyeing a pair of the Alclairs. They state a lot longer battery life and they would be custom molded.