My set is a Ludwig Blue Vistilite Kit I bought in 1976. Still in mint condition though it has been a road warrior at times. I have tried tons of drum heads from ludwig, Remo, many I don't even remember, but these Evans hydraulics are the best sounding, longest lasting heads I have ever put on it. They last and last, and I play hard, I mean Led Zep, Metallica, Black sabbath hard. The tune up very nice and stay there, more to do with the kit I know, but when I move them from inside to outside and back, Ilet them sit for at least fifteen minutes to acclimate. In the past a lot of heads need tuning from th etemp varince, not these, theyadjust to the temp and I am ready to rock. The oil filled heads give a deep and loud yet snappy tone. I use one gel pad on each head to dampen and that's it. Whether live in the studio at home, or outside on stage, these heads perform. It would take a lot to convince me to use anything else. I'm hooked.