I've flown all three and I still love the DC9 best for sheer flying fun and sporty control, the 717 is close behind, followed by the 'bus which has it's charms and advantages but sporty it's not!
tinpis, I would never howl at you but I think it is whatever you are used to. I could work an FMS very quickly on multiple turnrounds but over the weekend I flew a small twin and I was all at sea and had to be helped with the GPS and the RMI and tuning NDBs etc etc...... familiarity is everything.... OK?