I tried the Sizzix at a quilt show recently and wasn't impressed - it was a mini class to make a jewellery roll. Albeit it perhaps wasn't long enough to give it a really long test, but sufficient to know it wasn't for me.
One thing I swear by however, is the June Tailor Shape Cut. I had DH hand carry two of these back from Houston and they are the best thing ever! I make my own strip sets and charm packs in no time.