I've heard lots of good things about the Super Tuck, I've spoke with the owner on a couple of occasions and he's a standup guy, he's one of the few outfits that offers a 2 week money back guarantee if you don't like the holster.
All that being said, I like an all leather IWB and prefer loops to clips and went with an HBE COM III for my IWB:
And for an OWB I went with a UBG Regulator:
Another option that is similar (IMHO a better built option) to the Super Tuck is the MTAC from Comptac
We may be getting a SuperTuck shortly, and I'll probably order an MTAC to do a side by side comparison of the two.