Favorite spec?

So I have played every spec for DK since their release and I have to say, I still don't know which one is my favorite. I really miss Blood DPS from WotLK, the general "rotation" was fun for me and I generally liked how it played, but I really like Frost, 2h or DW, and Unholy now. Going into ToT I am trying Unholy again, but I am not quite use to the change from Frost, but it is still entertaining.

However, what I wanted to know from the community is:
1. What is your favorite spec? Why?
2. What spec are you currently raiding/pvping with? Why?
3. Do you miss the old trees at all? Why?

---------- Post added 2013-04-11 at 06:09 PM ----------

To answer my own questions

1. Currently undecided. 2h Frost has big numbers, and those are always exciting. DW just has an interesting playstyle. Unholy has always been the outlier in my opinion as it seems so radically different to me. I think the pet throws me off.

2. Unholy for both raiding and pvp. I only recently have heard and researched Festerblight and I wanted to try it out. Seems nifty enough for me. The pet still throws me off though. For PvP I just find the most utility in Unholy.

3. Blood. I miss Blood a lot. Raiding ICC with gear good enough for Arm Pen was just a good feeling, ya' know?