Hi there First post from me so thanks for letting me join. After a trial run I am locked in a HolyTrainer V4 nano having worked down from standard to small to nano and a rarely worn nub. Have tried a few cheaper ones to start and now my Wife is mad for all of this and has told me to get a metal cage. Plans are to order a Jailbird and its permanent will very little release. I am required to keep a sheet of performance and currently on 99.5% locked and counting. HolyTrainer will be kept for international travel and Jailbrid for every moment otherwise. Now she tells me she is buying a stopwatch