I've got the MOA version, haven't done that many comps with it due to dodgy back at mo. It's a very good scope for HFT IMHO.
Mine has the front end lose so I could reparalax it but find i prefer the lowest factory setting, mine was already done but I've heard they are easy to losen (don't know how true that is)
The parallax is about 25 on mine, I've got weird eyes though, 20y is slightly blurred and so is 30y. I think according to official spec it's supposed to be 35y lowest px setting