Have to agree with that. Although I have to say not really had many problems with the pw4000. Main problems I have had with cfm56 are bleed problems, egt margins and the odd reverser problem. RR 211 535 can be a nightmare with ffg's bleed handling valves and epr control/indications. And they are always a nightmare to open the reversers. GE generally behave, especially the cf6 and ge90 although I have had quite a few fuel leaks on the cf6 and eec problems.