I have owned and shot the first 4 you listed. I think the Taurus is the best. Best ergos, slide lock, most accurate, least recoil (all IMHO),
The masterpiece arms is also great. It is tiny, but it only holds 5 rounds. Mine has been flawless in 100 rounds. The porting makes the recoil very manageable. After i put it through its motion, it may prove to be the best of the bunch
Here is a pic of one by a Kel Tec P3AT to show you how small it is. It is basically the same size as the seecamp