I also have the Westminster big shot pro. I use go dies with postal service envelopes as shims...I'm also a member of the pins and needles group and I'm super happy with the purchases I've made through that group besides the help I've gotten with my questions. I got my westminster off of overstock at a great price, but I don't know much about the smaller sizzix models. I cut strips the other night and it was a huge time saver and so accurate.