With as many issues I've had with air leaks becasue of where I live (high mountains, hot and cold temp swings, dry air) I still happen to prefer the latest round of electric retracts, especially since the actuator motors have been improved int he last couple seasons.
Retracts have always been a PITA. Pick your poison - dried out seals and leaks, valves going bad, retract servos and linkages, miles of tubing and overhauling seals and tubes, or retract motor issues that happen more and more rarely these days (to me at least, beel e gearing for many seasons now). To me I still prefer a careful installation of electric retracts these days. The untrue mounting rails and installation shims would have been necessary on a pneumatic retract too but it might have just shown up in flight with a gear up landing as a result vs an obvious issue on the bench.