I have (at work) the HD24 and it's pretty awesome. It costs 3k :/ I would never spend that type of money at home. But for home, I'm waiting on this Windows Surface Pro Windows 8 thing. Let's you run regular Apps like photoshop, illustrator, Cinema4D etc. BUt has the Wacom pressure sensitive stylus, touch screen, HD Display port for an external screen, keyboard and mouse function and more and for $899 I'm portable.
The Cintiq is so heavy and obnoxiously big, there is no more desk space with all my other crap. And it's just a display with tablet features for triple the cost.
So I'd go with a Surface "Pro" when it comes out in 9 days.