Mercon V atf in mine for the last 15K miles. I wanted to try something else but ran into a time crunch and settled for the Mercon V and I have no complaints about shift feel, and it doesn't hurt that it's multiple times cheaper than the other recommendations. I also emptied the fluid a couple weeks ago while diagnosing a problem and it looked brand new still.
My theory now is that it might be better to run a cheaper fluid like Mercon V and just change it yearly, although that's probably overkill. I might try some 5w30 full synthetic next.