AFter a long and frustrating time - I gave up the search for the "perfect" trimmer. I now use several on a regular basis - each for its own "purpose" and I'm finally happy! LOL
I tried to link them below. I adore my table top trimmer. It has a place on the L part of my desk and I use it as my primary trimmer. ITs the first guillotine I've had and I love the precision cut.
I use the fiskars if I'm going away from home to craft - which is rare - or if I want to make a cut that is in the middle of a page but not all the way to the end (usually on score lines for "fancy" cards.
HTH - I know how frustrating trimmers can be!