In reply to Rick Asher:
Yes, it is crowded and "camp poo" is real, although seemingly better than it used to be.
I went with SummitClimb and found them excellent. They have quite a high success rate. See:
http://www.summitclimb.com/new/default.asp?vid=14
Even if you do not use them, their website is informative.
The Dablam has been active in recent years and has shed some ice avalanches. I do not recommend companies that spend the night at camp 3.
Good luck!