I have had no issues with the Howard Leights. Seems to work just fine on an indoor or outdoor range and I do not find the clipping annoying.
A lot has to do with the environment and the type of shooting you're doing. For everyday plinking or shooting with buddies at the range, HLs and the like are probably just dandy. So what if you miss a word or two when your buds are ragging on you for out-shooting them?
In a course, however, it's rather important to hear EVERYTHING that the instructors are saying, IMO. I've paid good money to learn, and missing a firing command or a correction because their words blank out when the noise-canceling circuitry kicks in can be frustrating. That's where the value of the higher-priced muffs becomes apparent.
And the HLs hurt my ears. Maybe I just have big, tender ears.