Well, i guess i'll play the negative nancy and say hell no. My buddy's 347 had 3 of them break a huge chunk out of the same place on the outside of the intake valve relief. Some people on here said it was because he gapped his rings too tight...well his SRP forged pistons are gapped the exact same way and they haven't broke. The KB pistons didn't have 2k miles on them when they went. Opinions will vary but for my money i wouldn't own hyper pistons, KB or not, and i'd be shy about buying KB's even if they were forged.
Now everyone will come in and debate about heat expansion and how hypers expand less and seal better and are (in some cases) lighter than forged and blah blah blah. My stance on this is the same as it's always been...none of the major serious high hp racing bodies use hyper pistons...Nascrap doesn't, Top Fuel doesn't, F1 doesn't. This to me says that in serious racing applications they're sub par and i only spend money on parts that are gonna last. But, that's just my opinion and i'm no engine builder so debate on.