I own them all (including the gun runners arsenal and all those) and have only done honest hearts which was a few years back. I haven't played NV for a while but I got a new build going based on rifles from the helpful people here. Since the game ends after you beat the main game, what do you recommend for going thru the dlcs for maximum playability?

For me I like the bad guys and creatures in the DLC to be very hard requiring some though into how to take them out. So I usually don't enter one until after lvl20 or even higher.

It's been years since I ran the battle at the Dam. I leave all my games/builds open for the DLC's that way.