To Sammy - yes, you picked up on that!!! Thanks for pointing that out in a most civilized manner (almost unusual for this forum lately!!). Yes, I'm not a fan of the GE corporation, but I have to give credit where it is due (CFM) - as the post's original question asked what I prefer, I noted my preferences! And yes, I know United Technologies is huge, too, but the main reason I dislike GE is their worldwide environmental record, not an aviation related topic, especially with one huge issue regarding responsibility for toxic waste cleanup in my home area of New York state in which GE is claiming "all is well" when in reality everybody but GE agrees GE is responsible. Given GE's lack of culpability in the environmental arena, I'd be horrified to see their response if one of the GE powered 777's shreds a fan disk and takes down a plane - "Well, it's not our fault because the pilot put those thrust levers to 100% for takeoff, blah, blah"..... Again, this is only my opinion - I have flown on many GE powered craft and will continue to do so, as I really don't have much of a choice and they have proven to be safe!! As an aside, hasn't RR been absorbed by BMW, or something along those lines - I just thought about that last night while looking at a 717 photo!!
Also to Ray - thanks for the discourse on CFM!