Yep, I grew up going to PSV games and still watch all of them. Unfortunately our league is more about giving time to youth before we sell them for profit to stay alive. That's why I prefer watching the PL now, but I still like PSV. I occasionally watch other Eredivisie matches, mostly Ajax and Feyenoord.
I've seen pretty much all broadcasted matches of him (including his youth days) and as far as I can say (as a fan) he's the real deal. He could be the next big star. He has all the attributes: first to enter the club and last to leave, hired professionals for his lifestyle, cut off all connections with bad influences, built like a tank and has no real weaknesses to his game. If we don't take a punt on him we could regret it in 3 years time. This season alone he's improved so much it's unbelievable. It was good for him to stay at PSV for at least another year after the WC, even whilst many thought he would leave.
Memphis Depay is the best player in the league, hands down. He's the top scorer (as winger!) and pretty much too good for the league. He's highly rated by van Gaal, Cocu, de Boer, Koeman, Rutten, Advocaat for example.
Blind isn't highly rated in Holland. He is rated below Clasie from Feyenoord for example, even by most Ajax fans (last season I'm speaking of). He wasn't a highly rated youngster when he first started playing (he was good at nothing, but decent at everything) and he was seen as daddy's boy. He's never been a great player to watch but van Gaal and de Boer see something in him and I trust their opinions more. I think he's excellent, maybe not worldclass but he's a great teamplayer.