RE: the best workbench
So far this has worked well for me, its pretty level 8' x 4' ply, 3 Steel Sawhorses, All bought from lowes for less then $75. Currently I am putting together my Great Planes Escapade and have my Tower on the bench and theres plenty room for both. Hope this gives you more ideas.
Ed
P.S If your looking for a Work/ Tool bench, the Kobalt in the picture was $150 and only took about 3-4 hours to assemble, very solid.