I have fired the VP9 and own the Strike One.
The VP9 has a good trigger but the Strike One's is better, the grip angle and bore-axis of the strike one leads to decreased recoil (which is already slight in the 9mm) and your follow up shots are much quicker.
My strike one is freaky accurate for a handgun, at 25 yards im cutting one jagged hole in the paper. I wish the Strike one had the grip panel and backstrap options of the VP9 but all in all I believe it to be a superior pistol.