Torquelink,
Have you seen an aicraft pricing guide? I have one sitting on my desk, actually from two different sources, and they both show RB211-524 powered 747-400s and 767s as +20% less value than a comparable GE or Pratt.
If you would read back, I said search around PPRUNE and you will find what I am talking about. I am not going to do it all for you. Try and learn something while your at it.
