I own a Tasco PDP3 that I bought about 5 years ago. I have been very pleased with the little red dot...had its first assignment on top of my Ruger GP100 .357 Mag revolver and then was transferred to my 14" .375 Win T/C Contender where it is to this day. It has been a heck of a rugged red dot. Originally, I thought that it wouldn't last too long on top of the .375, but several hundred shots later, and she's still kickin'. I have no intention on changing this setup. I'm sure that there's nothing wrong with your other choices...they all seem like they would be good dots, I just have always been satisfied with the Tasco.