i would suggest before you buy one, you test sit in it, if you can.
depending on how you are built, will be a major factor in how comfortable the seat is. I can tell you getting in and out of the car will be alot more uncomfortable.
also for longer driving im told they are uncomfortable also.
Bride offer a very high end reclinable seat which is around $2000 -$2500 its meant to be the best of both worlds in terms of fix back and reclinable.
here some info on it: ( GIAS SPORT, STRADIA SPORT )