I just flew in a MD-80 that had been converted. I used my gold status to get an exit row seat. Now I have to send a complaint letter to AA telling them that when you are properly belted, it is very difficult to reach the seatback pocket in front of you ;-)
In all seriousness, the difference is rather remarkable. Once all the planes are converted, it won't make a flight unbearable if you don't get one of the exit or bulkhead seats.
Neil