Thanks for the hyperlinks and replies - very helpful.
So far I've only used the Busway between Kota and the Main Stadium and the zoo - so easy tourist stuff. I tried to get the commuter train but gave up and returned to using the busway, I'll have to try again next time. But next year I might be relocating to Jakarta and I don't know exactly where I'll be living so I want to get a better understanding of the real coverage of he busway.
Usually for relocation by your company the company will give u a car and driver, so you don't have to worry about transportation (but still need to worry about the time needed lol)
commuter train is convenient for travel across city, although from times to times the motorcycles may risk their life to stop the train in some railway/road interceptions... hopefully by the time you relocate here the MRT is open hahahaha