(I appreciate that this is an old post)TBH I think I'm leaning towards giving the Nuda a miss due to fears that it'll be difficult to sell on.
the Nudas are going very much UP in value as they are a bit of a cult classic now and people are keeping hold of them - My "S" model is probably worth nearly as much as an R model would have fetched a few years ago
if you can find an R then get it - its really worth the extra expense! - Ive had both and miss my 900R - the brakes were sooo much better and the suspension at both ends is noticeably more compliant on the R - the front on the S is harsh over potholes etc.. - to the point that I may try and put different ( adjustable) internals in
( the R makes identical power - just has one tooth less on the front sprocket BTW)
but the fact I'm on my second Nuda speaks volumes - awesome bikes - very "real bike" feel - and the most head turning Bike Ive ever owned
I did the NC500 on it 2 years ago and both the lads that I let have a go on it started looking on ebay for one...