I only know about the Kramer Confident because I bought one of the first ones out.
It was worse than terrible.
It rode up on the other side and sagged on the gun side...it was impossible to get to the firearm in any reasonable amount of time. It was extremely bothersome & uncomfortable.
I tossed mine out...no...I stand corrected...it sat in the closet for a month & then I tossed it out.
Are there better holster shirts out there these days? I'm sure there are. I sure hope so! I've seen a couple that looked pretty good. And that Kangaroo rig looks decent also.
I will defend to the death my right to say that the Kramer Confident Shirt stinks.
Probably literally also since they smell like BO in summer if you don't wash them real often.