Aside from my 20 Aspect of Glass ships, I'd say it's probably the No Land Beyond. Wanted this one for a LONG time but never got it. Then it randomly drops for me on Crota and I was stoked. Frantically leveled it up the next day and was pretty happy with it. This and the Lord of Wolves are both really fun to play with. Sucks that the NLB is almost useless in PvE.