This week I spent some fitting time with my local Titleist folks.  Swung both the TS 2 and TS 3.  I saw very little difference in stats with the 2 heads.  The new standard length for Titleist seems to be 45 1/4 or 45 1/2.  I use a 43 1/2 so I had to choke down a couple of inches.  Ultimately selected the TS 3, HZRDUS Smoke, 60 grams, 9.5 deg., low to mid launch, low spin, and of course 43 1/2 inches, with a mid size Golf Pride grip.  Since my results were so close, I selected the 3 because it just looks better to my eye. Both are 460 cc's but the 3 looks a bit more compact.  
There is always excitement for me in acquiring a new driver, (Titleist only gives us the opportunity every 2 years) but in this case, I was very much impressed with how the club flowed in my swing, like it was made for me alone.  I will be at the edge of my seat until I can actually get on the course with this baby.