After years of looking after CFM56-5 powered A320's from Line Maintenance to C check, I am now looking after V2500 powered versions, and as suggested by ASFKAP, we are constantly under the cowls of the V2500 version, new and old with routine maintenance (starter & IDG servicing, ignition, indication and bleed defects), [some of the bleed and indication defects are water/ice related], also the pylons and reversers seem to require more regular attention. Some of the not to old V2500’s (several months) had to be removed rapidly after a manufacturer notified potential compressor problem.
And as suggested earlier the CFM56 seems to be more tolerant to bird/debris ingestions.
For a while some of the new CFM56-5B engines were giving some serious bearing failure problems, but have not heard much lately.
As my V2500 instructor said the CFM56 has a strong controlling FADEC, but the V2500 has weak control.