Essentially, it depends on which car you'd like to experience. Everyone gets to experience all the different areas -straightline accelerating, skid pad, kick plate / recovery, short track skid control and longer track (just one section will let you get into 3rd gear).
My wife, who knows me all too well, surprised me with a 1.5 hour session and requested and got the only car they had at the time, with a manual and flat six. It was an absolute blast. That 1.5 hours was the shortest 10 minutes I've experienced.
So, as I said at the beginning, I'd focus on which model, transmission you'd like to experience. Toward the end of the session, your instructor (at least in my case) will let you spend a little extra time in the area you enjoyed the most and want to try again.
Have fun choosing. The experience is worth every penny.