We were in the same boat as you. Only needed to crease small runs, 100 -2000 sheets. We just installed a duplo creaser. Wow, what a great machine. Of course not a high production unit but it does a great job. Just load the feeder, push start, and walk away until that stack is done. Excellent crease on light or heavy stock. We are even buying a micro perf attachment for our short run jobs. Worth the money. But, if I were doing long runs I would definitely buy a Tri creaser.