If I may add something to the Cintiq question; I've been using the 22HD model for almost two years now, and I wouldn't even dream about going back.
I guess it depends on the model one is using, but mine has been almost perfect for me. The screen is only a little smaller than my main monitor, so the entire PS interface fits into it perfectly well and I never have to cover any of the utilities with my hand.
The tablet sits on its own stand rather than laying down on the table, so I'm not really leaning over it. You can adjust the angle to your liking. It's more like working on a paper on one of those painting stand things (sorry, no idea what they are actually called in English). To me, this works, as I've always preferred to work with the surface I'm drawing on at an angle rather than laying on the table. When I draw by hand (which I almost never do these days), I usually like to sit with my knees up and a sketchbook resting against my thighs.
I honestly have almost zero complaints so far. There has been one instance, where a Windows update screwed up the harmony of my PS and the Wacom driver and it took me a while to find a way to patch it up for a time. The next driver and PS update, which came out in a reasonable time, fixed the issues, and there have been no other problems since. The Cintiq has been a god-send for my drawing ability. I could never get used to the old Intuos I was using before - I worked with it for years and still found it difficult to get the hang of it. I had a few weird 'dead angles' that my hand and brain just couldn't get the handle on, and whenever I tried making a line in one of these angles it would always be 30 degrees in the wrong direction. It could take me 5-10 tries to get a single little line drawn correctly. None of this exists with the Cintiq. The screen also rotates 360 degrees on its stand, so I can even turn the screen if I find it difficult getting something drawn at a certain angle.
Like J said too, obviously take all of this with a grain of salt, as a Cintiq is mad expensive and you definitely should think it through carefully before getting one. But for me, personally, it has enabled me to do maps in a way no other device has come even close.
...
Whooooo, that got a wee bit out of hand didn't it? Your thread is great, J, hope you don't mind too much about my lenghty praise on my baby...