just for anyone interested:
my roommates got APT's grippers, the 100,150,200, and 250. I have the CoC #1 & 2. I can close the #1 pretty regularly, its rated at 140. the # 2 I'm getting close, and thats 195. So I try out the APT grippers. 150, no problem, 200, feels about like the CoC #1. the 250 from APT feels about like my CoC #2.
major differences I noticed. the APT grippers seem to have a sharper tension curve. meaning: it starts out very easy and gets tough just towards the end. The CoC's feel rather tough from the first part of the grip and actually the CoC's feel a bit wider part (grips). I have to set the gripper more and actually give it a small squeeze to get it seated in my hand right. the APT's seem smaller. I barely have to set it up.
I like them both, the CoC's feel tough from the start, the APT's start off a little easier.
so thats my mini review....hehe.