I agree with the above questions.
The shop fox is the best one in your list and to be honest, it isn't even close. That said, that doesn't mean the others aren't good because they are. I have a shop fox, some home made ones as well as a couple that are identical to the Portamate/Woodriver models (one with aluminum handles and one with plastic) and have owned one (it is gone now) like the Central Machinery one that I believe might be a copy of a Delta product from back in the day. I also have a tool on a Ridgid Herculift.
For a reasonably good solid garage or basement floor all that you are looking at will perform satisfactorily for a table saw..
Last edited by subroc; 10-03-2018 at 08:45 PM.