What ever you feel comfortable on is what you should get, just make sure before you drop that much money you ride a variety of deferent bikes and sizes. As a rule I am a medium, but not every medium fits me well, for example on some brands like GF, the small is a perfect, and their Med are a bit too big. I have gotten on others brands where I need a large. Spending that much money you are sure to get a quality bike, but a quality bike the doesn't fit or you don't like the ride of is not a good investment. The good folks as specialized allowed me to take out the 10K specialized S-works Epic Carbon 29er for about a hr and 1/2 on my home trail. All I ride are 29er's anymore, but as nice as the bike was it was not for me, I found for my riding style the SJ 29 fit me and felt a lot better.
Opinions on bikes are like that certain part of a anatomy that everybody has one but no 2 ever seem to be the same.
Good luck on what ever you get and post a pic!