Most people only know the rev7 which you never wanna buy. The rev5 is a totally different machine in quality. It used to be compared with the Lexicon PCM series.
I'm not using mine for lead vocal reverd (I have a TC M3000 for that) but if I remember correctly their is not one recording that left my studio without the drums being more or little processed with the rev5. I have also a SPX990 and will trade it everyday with a rev5.
Buy it, and never sell it. This is one for the books.
I believe Yamaha has pdf files of their manuals. Otherwise you have to contact Yamaha itself. It's useful to have the manual, there is a lot to learn from it.
I haven't found a pdf. for the Rev5 yet, and Yamaha Australia can't help, although I have found a company who can supply a photocopy (with Yamaha's blessing).
The unit came from the ABC (Aust. Broadcasting Commission's) studios and was bought at auction by a local audio company........I have bought it from them for $500 Aust (approx $250 US). Considering they were $3495 Aust., new, I feel quite happy with the purchase.