Talk to any type of welder, and the heavier the table the better.
In my op, get a toolbox for tools and a workbench for work. 3/8 plate minimum, if you're welding on it, the thicker the better at least 1/2 inch. Put a proper workbench just above your toolbox or else where in your workspace. If you know anyone in the commercial construction trades, get some escalator tread from them. That stuff is really light and strong. 2 inches thick AL and hollow inside with ribbed structure, great for workbenches.
10 guage is only 1/8 of an inch for reference. 16 ga is 1/16. Thats going to bend easily. If you plop a rotor or really anything slightly heavy for that matter.