I bought the RAVE CD from eBay, not expecting much, but have to say that it is absolutely SUPERB!
Must have info for any LR owner. Having owned various Haynes manuals, I really don't like them at all, for some reason I always get confused with the instructions in them. The RAVE info (IMHO) makes maintenance on your LR pretty easy, the exploded view diagrams are excellent. There is also a lot more information on the electrical side of things, pin outs and data values for various ECU's. Personally I wouldn't say it was US biased - it does mention specifics for NAS models, but clearly seperates the differences (from the bits I have read anyway!)
Covers pretty much any "modern" LR - Defender / all Discos / all RR's / Freeloader - in one CD - you'd have to spend a fortune on Haynes to get anywhere near this amount of info.
Just buy one from someone with decent feedback, and check around as the prices vary quite a lot.
To prevent my CD being damaged, I copied the files on the CD to my hard drive and run it from there - it is quicker too! You can always print it it all out (have plenty of paper ready!!) and stick it in a ring-binder if you really want a full hard copy. Personally don't see the need, just print out the 1 or 2 pages you really need and take them to the car with you!
Get it!
Matt.