Steph we all have to be comfortable with whatever we use so there is going to be a lot of differances.
Still another thing that needs consideration is how you intend to do your cutting.
I have seen and attemped to use a bunch. The Exacto knife is capable of makeing very fine cuts as Betty suggest .However we all don't have the dexterity of Brian or maybe Betty.
I have tried The Alto,The Cube, The Free Grover ,the Dexter and even the DexterMini cutters. I setteled on the Dexter as the weapon of choice with final cuts made with an exacto. This is because I choose to cut from the rear of the mat so that any pencil markings I make don't leave smudge marks as the cutter drags over them. Also because My Big clumsy hands that are devlopeing Arthritis don't accomodate a small cutter that may need to be pushed with my fingertips.
The biggest draw back to this method and choice is that you must remeber to not cut too close to any other cut( about 1/4 inch) so as to allow for the doubled bevel effect of the two cuts on the front which aren't readily visible from the rear.Then I use the Exacto to finish up the cuts from the front where i can see everything and the Exacto tip allows much closer cutting. Also the Dexter is probaly the largest of the cutters and you have to watch your cuts in the small notch to the left of the cutter where the blade is set, It also has an advantge of being Chrome which doesn't accumulate the graphite of any pencil marks as the plastic does of the Alto and Cube or Freegrover if you make extensive cuts.
Of course Brian is the man and if you can perfect his technique the Exacto solves all that. But you do have to make multple cuts to go through the mat to achive the smooth Faceted cuts that Brian's work is known for.
Most Consumers are satisfied with considerably less perfection .Just don't make my mistake and Hang one of Brian's mats in the shop.LOL
Mine pale by comparison as seen in the Design segment here of TFG in Buddy's Picture Gallery.Rothfwlmao
BUDDY