Yes, there is a real difference between the neo flamenco people like Jesse Cook, Ottmar, etc. [which I do like] and the REAL guys like Montoya. Some might say it's like comparing Kenny G to John Coltrane, although I think that's an insult to the neo flamenco artists and not completely fair either. But there is a difference.
Real flamenco people also get pissed if you associate the Gypsy Kings with them. Maybe because they're actually from France or because of their worldwide pop appeal. I like them too. But then again some of these people don't think anything is true flamenco unless it comes from the caves of The Sacramonte. Suffering seems to be a big part of flamenco.
There's also a lot of great non-flamenco Spanish guitar work.
Amazon.com has a lot of nice neo flamenco compilation discs such as Flamenco Fire and Flamenco Passion with artists like Ruben Romero, Strunz & Farah, Jesse Cook, Ottmar Leibert, etc... I'll definitely have to check out the Gino D'Auri XRCD.
The thing I like about music from Spain is that it has so many great Gypsy [Middle East & Indian] and North African influences. Rich and passionate!