The Peltor Tactical 6 is a perfectly good unit, and will serve you well. I have experienced the clipping described here, but it is really nothing more than an annoyance than anything else. My point is that if I am going to spend a significant amount of money (as compared to passive hearing protection), I am going to buy the best technology available for the money. ProEars cost a little more, but they have served me well.
Also, run time on the ProEars is minimum 250 hours continuous on a new set of batteries, at least 50 hours better than Peltor's Tactical 6 and over a hundred hours better than the Tactical 7.
I hope this helps.