I got my vanguard chest first because that was the only thing under level 20 I had left.

The next day I ended up getting a legendary head piece which was the exact same one they sell for vanguard marks. This week I can get another vanguard piece which will be boots, then I'll buy the gauntlets off the vendor that appears on the weekend with the strange coins.

The weekly heroic is a bitch though, even at level 22 that damn moon strike is the hardest strike in the game. I'm level 25 and we tried it last night and died like crazy. If you can be on tonight we can try it together I thinking having two titan defenders will help with our shield.