I used to have one similar to this years ago. The Grizzly has features the other one didn't. I love that the table tops both pivot to 45 and 90 degrees. The "other" one did not.
Grizzly, I'm a happy guy. This portable Bench/vise aka Workhorse gets a ride to work in my 4X4 every day.
Great tool for the construction and over all Handyman line of work.