Nanaotech and graphene may not be using the true technology, but they have worked well for me. I have four nanotech packs that I have been running for two seasons with no problems. Just another good option in my opinion. I love smc and I run their 4s packs in buggy, but I managed to crack the cases on the two 2s packs I had a while back, granted it was probably due to wrecks or not landing jumps as smoothly as I should. If it wasn't for the case cracking, I doubt that I would have ever looked at other lipos.