I started the game as a bad character and got to the G.E.C.K then got stuck in the vault with no ammo, healthpacks and a bad stat layout so i started again and played as good.
It was a lot harder and I took the option to disarm the megaton bomb, however, whats the differenc ebetween exploding th ebomb and not? I thought it was just which house you received, and tenpenny tower wasnt too bad, whereas some people earlier in this thread were saying disarming is better.
More quests, more xp

On a side note, I am looking to collect the bobbleheads. However I have a dilema. Basically, when I started the game originally and didn't know what I was doing, I broke into Lucas Sim's house and picked up the strength bobblehead (i think) and then sold it at the craterside supply. Is there any way at all that I can get it back or have I made a big boo boo?