Don't Do it! Groz, Anant, and the "contractor" grade of Stanelys are all uniformly junk. They're OK as an expensive paperweight, but that's all. If you're sure that you want to work wood with handtools/powertools or handtools only, you're far better off saving the cash to get a Lie-Nielsen or a Lee Valley, even if that means fewer planes for now.
If you're OK with a bit of metal work and are willing to learn how to "fettle" a plane, you can get a pre WWII Stanely, Keen Kutter, Union-Chapin or Millers Falls plane for not a lot of money, replace the blade with a Hock, spend a few hours flattening the sole and the back of the blade, and you're in business.
You can make a workbench without a vise. There's a common misconception out there that "you have to have a bench to build a bench", and it's not true. You do have to have some way to immobilize pieces of wood so that you can use a long plane (a #7, a #8, or even a #6) to straighten the edges well enough to go through a table saw, but that can be done with 2 good Bessey clamps. All it takes is some relatively immobile object that's about waist height - a deck or porch railing, for example.
Thanks for the info on the groz (should the be pronounced "gross" then?). I figured that they were too good to be true.
As far as immobile, about the best choice for me is my table saw...