Hey ArlyA,
I have the Extractagator with the "Big Foot" base on it. Works very well on stuff about 1.5" and less. It will give you a workout, especially if you're an old fat guy like me! My only complaint is that the handle could be about 6" longer for a bit more leverage. I've had mine for several years though, so they may have a newer model out.
When I bought mine I looked at the Extractagator, the long handled Brush Grubber and another one similar to the Extractagator whose name escapes me now. Interestingly, I had found a website that compared all three and that person recommended the Extractagator.
I also have a Brush Grubber BG-8. That also works well hooked up to a tractor or a Jeep. I never tried it hooked up to the ATV that I owned for a short while, but have seen videos of people doing that. Again, it works well, but the constant on and off the pulling vehicle gets tiring. Definitely a lot quicker if you have a second person.
EDIT: SORRY - didn't realize that this thread went to a second page and that you had already purchased something.