Best investment:
1250 MCs, one time only, to get mechbays.
That's it. Don't know if it qualifies at being the best since it was the only one and probably will be for the time being.
Edit - To explain the last part:
I waited for the game be officially released, so they removed the "BETA" tag. I went with it and bought the MC package.
Then more often than not, I got the feeling this game was (and is) still in BETA stage. Although the tag is removed, we still have the same kind of content we had 2 years ago.
Granted, we have maps and mechs. I ask, where are all the things related to MW like dropships, tanks, fighters, planetary struggles, etc?
Until some of these things are introduced this game will feel like BETA to me... (hoping CW will bring an interesting twist to this BattleMech-combat-only-game).
Edited by FlipOver, 25 August 2014 - 07:08 AM.