I considered doing my CFI there, but since I didn't have the time to commit to the accelerated program, they really couldn't fit me in. They pretty much just do accelerated programs, but they were respectful to deal with. I have also taken a couple writtens there. You need to show up ready to pass your oral and be pretty proficient in the maneuvers. You're pretty much going to fly each maneuver a couple times and then go straight into checkride prep over the 5 days.
For what it's worth, last I knew if you put $1000 (might be $2000) down at Sonoran Wings @ KTUS, you get a discount of somewhere in the 10-15% range. That makes the dual cost of their Mooney (M20C) around 180-$200/hr. You can do 10-15 hours in the mooney for around $2000-$2500, 5 hours of oral prep for $250, it may end up cheaper than DE depending how ready you are. I'm sure they can get you done in a week too, they had plenty of quality instructors there several months back when I did my IPC. They were also looking at a DA40 which I think is coming soon, and a 182 RG.
You can also walk from all the hotels by the airport to the school and places to eat, you can't do that at DE.
Hope this helps, good luck!
