I've got an eclipse and the tempest. No complaints with either of them. They've completely replaced my wrist releases.
I had a Tempest. Great release. One of the most adjustable trigger designs as well which I really like. You'll likely have to tune the sear out of the box with their adjustment screw to take the slop out of it. That takes 2 seconds and makes it break like glass.
Not sure on the differences between the tempest and the vapor but I use a 4 finger vapor and I love it!