You get what you pay for.

I've got 4 of the Company B ones already - two built, and painted, two more waiting to be done, and the quality is second to none.
Having said that, the Imprint models i've got (T-90, Bradley) are excellent also - very sharp castings, BUT 1:50, not 1:55 like the Company B ones, if you are trying to match scales.
The Acheson one looks interesting, but by the looks of it, completely resin, whereas the Company B ones contains a number of metal parts - i'd be nervous about an all resin kit getting damaged, as the storage rails etc are really fragile.