I can't really fault these versions...which is saying an awful lot considering my indecent addiction to the Slammersverse. However, on the 50-tonne version (which I feel is more in keeping with the base theme, seeing as they are the heaviest hover-vehicles in the fiction) I can't help but think that those 3 tonnes devoted to miscellaneous "Commo Gear" could better be served by the inclusion of, say, an RL-20 for mine-clearing purposes (they are standard equipment on all the Slammer M-2 variants) and either Guardian ECM, BAP, or even a C3[ i ] slave. Any savings could be additional armor, ammo, or the ubiquitous Beer Cooler.
Just a few thoughts.