I own 4 & am fed up with all of them. Newest one (rotary blade trimmer from Staples) is the worse! Nothing is square & it really shows up when layering those mats or trying to make cards. Cuts with any of them don't come out straight. They have a bow in them or taper. Grrrrr.

Price not an issue if its the last one I buy and it actually WORKS!!!!

Price not an issue if its the last one I buy and it actually WORKS!!!!