This might be as good as it gets in terms of norebang in Vegas. They have nice interior, decent prices on the rooms/drinks, and most importantly, the better selection on songs as it is as recent as it can be compared to other places.
The sound quality isn't bad, though there was no option to really tweak the system to change the settings. Service was great, and if you can handle the wait on certain nights, this place is worth going to to get your singing on.