You have to give Pantera credit. A large portion of their career happened in the nineties when alternative was king and Korn was still considered good. Despite this they managed to gain popularity, and turn out reasonable material. Also they don't really have any bad records, they have a couple that aren't absolute masterpieces like Reinventing the Steel, or The Great Southern Trendkill, but to my ears these still sound good and were imo some of the best records to come out in the respective time frame. Also you may like the production or not, but Pantera albums sounded better than most of the metal stuff out there, no small thanks to Terry Date.