Same here, first time around I went with the NCR. I kinda just did whatever, and that was how it went.
I'm just trying to get as many achievements as I can, so over the past few weeks I beat House, Yes Man, and Legion paths. Legion was the worst though, I have a reaaaally hard time being the bad guy in any video game. d:
Now I just play on my fun file for the upcoming DLC's. I have like 72 hours on that one or so, so I'll just keep stackin' up ammo and finishing all the quests I can find. ;)
Credit to .Impact for this good lookin' guy right here<3 ∞