>>2035
well, then buy on ebay before you fall into the pit. and I used to like WH40K before 3rd ed rules came out (there were space marine jetbikes back then)
but certain pieces of army history were re-written, honestly fun rules were removed for "Simplicity", etc.
I reccomend you at least look into Heavy Gear. If you're worried about complexity, then look into the Blitz! rulebook, which can be combined with the RPG SiLCORE rules (which adds advance pilot leveling up/skills/etc). And there's tons of supplement books (both for rules for armies and just book books telling stories of certain events/factions/etc.) And the miniatures are cheap as fuck, high detailed, and awesome. The scale is 1/144 though, the mechs are big, but the infantry are smaller than WH40K