I have both the UPG and the MIAD on different rifles and I like both--it just depends on what I built the rifle for and what other parts I have on the gun (furniture). I use the UPG on my RRA Varmint A4 (24" bbl), but I have the MIAD on my newest S&W M&P15 carbine, and I even have an Ergo ambi grip on another RRA Tactical CAR A4--no grip religion here for me. It's all about how it feels for you on the rifle you put it on.