With the prevalence of the in-style 11-speed cassettes it was great to find this replacement Campagnolo Record 10 speed cassette. It works great. I replaced the same existing cassette which had over 70,000 miles. When my bike shop mentioned the 11-speed grupos don't have the life durability of the 10-speed there was all the more reason to stick with my 10-speed grupo. It was great to find it at a good price.
I've tried Shimano, still preferred Campagnolo. Then I heard all the hype about SRAM Red and tried it, still prefer Campagnolo. It may be expensive, but nothing I've tried shifts as well or lasts as long.