I have been using the standard Peltor/3M/Stihl/Husq/Rockman hard hats and ear muff combos for ground work and all seem to work just fine, so far... some are more comfortable than others. I want to upgrade to a climbing-type helmet. A quick on-line search shows that most retailers sell Petzl, Kask and Pacific. There must be other good quality options too. (?) FWIW, I'm looking for maximizing breathability comfort. Price is not as important. I'd rather have one good comfy, cool helmet than waste time and money trying to find a cheap alternative. Unfortunately, there aren't many/any store locally that carry this stuff, so I can't "try before you buy" without driving over 2 hours round trip. Any help and experience would be greatly apreciated. However, in the end, I know that helmets are like work boots. Everyone has there own favorite.