are you towing heavy loads often?
are you going to be doing any difficult 4wding?
do you do many kms in heavy traffic?
do you have a perm? (ok last Q was obviously to see if you should buy a D40)
Answers to these questions will give you & us more to work with when suggesting a shift type.
I'm with hutchstr, i didn't think D22s came in automagic. so if it's a D22 your getting i think your decision has been made for you.
i have to agree manual str is the goer...i think 90% of us d22 yd25 are super happy with our purchases...as for the clutch hutchstr has put it plan and simple...i take mine back to nissan for anything that is out of shape...