They look like they're leagues better than the Sooper rulers. Are you able to confirm that?
Now see, we've had one of those exact units for years (60-65") and it sits in a corner collecting dust. It does cut straight, but the knife cut isn't exactly on the edge so its like a 1/8" off. Plus, I find it awkward and heavy to move around the table when you have to make a lot of cuts, and I'm a big guy. Me and my staff prefer the Soopers with a good sharp Olfa, lightweight, easy to use, cuts straight and hold up very well to lots of use.
But I guess that's why we all come to Signs101 right? To share our knowledge and experience with others and hopefully gain the same. Some like Roland printers, some swear by Mimakis, I like Mutohs...whatever. I guess when people ask for the "best" tool or method to do something, it really depends on what's best for the actual end user and their preferences, eh? LOL