Mal

I do prefer the overheating mechanism. Actually, what I wish they'd done in ME2/3 was the heat-sync thing, making you reload periodically, but have infinite total ammo.

I just prefer the RPG mechanics and the inventory system of ME1 a lot more. I will say ME2 feels more "complete" and has a bit better storytelling, though.

I prefer all the back-end mechanics (leveling, inventory, etc) of ME1, but I prefer most of the "gameplay" of ME2. From what I've seen of ME3 it's shaping up to be the best of all though (I say that cautiously, I haven't seen how the armor system works).