Nine Inch Nails in Missoula a couple years ago was phenomenal. Trent Reznor was amazing, and played NINs best for three solid hours.
Foo Fighters in Missoula was probably the top of my concert list. Dave Grohl played for 2 and a half hours non-stop, no bullshit fillers. They were touring with Motorhead. Here some vids I shot of it:
http://www.youtube.com/watch?v=41cYHOS681Q&feature=g-upl
http://www.youtube.com/watch?v=d1GkrCVYvkY&feature=g-upl
http://www.youtube.com/watch?v=YePLte_DKr4&feature=g-upl
Saw Metallica and Godsmack together in Casper.. terrific show from Godsmack, but most people were there to see Metallica.
Mayhem Fest in San Bernardino was good, headliners were Korn, Rob Zombie, Lamb of God, and Five Finger Death Punch.. Rob Zombie, as always, knocked his show out of the park. A couple of vids from that I shot:
http://www.youtube.com/watch?v=CtROVsdTTnU&feature=g-upl
http://www.youtube.com/watch?v=FLr5DQW04xs&feature=g-upl
Saw Ozzy, Zombie, and In This Moment in Billings.. Zack Wilde was playing guitar for Ozzy.. great show, had a ton of fun. Zombie again was spectacular.
Korn is coming back to Missoula in a couple weeks for a show, looking forward to that.
But really, I've been to so many concerts all of them had good qualities.. I went to a smaller show that had AFI as the headliner and easily one of the best concerts I've been to.. AFI was terrific.. their opening band made me wish I was an assassin in real life.