One Pilot's View
7500 on A320 family, 75% CFM, 25% V2500
No preference really, both have their advantages/disadvantages.
CFM, quicker starting, lower idle thrust,higher reliability BUT, higher fuel and oil consumption.
V2500, more fuel/oil efficient, more effective reverse thrust BUT slow starting, high idle (more braking during taxi) and seemingly more problematical.
At least in MY experience.