Why get the qev in the first place if it gives you more kick? <_<
Well you can expect an extra 100-150 shots per tank with it, so i think it's a good investment
Also its a nice lube trap so you don't have to clean your noid out if you over lube the bolt...and lets not forget decrease in cycling time so you can reach high speeds much easier.
Like said before, even if it kicks it doesn't kick that much...so why not buy a QEV when it has 1 downside and several ups?