I saw the "Blues Traveler" concert here and had a great time. I am no audiophille, but it was very good sounds, big screen monitors got us up close to the group, and I had an awesome view of the concert. Granted I had great seats which was four rows from the floor.
A quick note...the MGM Grand security personnel was kind of rude, but I think that was because they are union and they are on a time schedule and they herded us out like cattle as soon as the concert was over. "Dang guys...slow down...the concert ended 5 minutes ago!"
I would definitely consider seeing another event here at the MGM Grand Garden Arena.