I too have wanted a Cintiq for a long while, with the price absolutely being the biggest barrier. There was also a lot of concern about how Wacom has apparently taken baby steps (at best) to try and improve their hardware. I've used an Intuous for a while, but I just can't get over the whole "not looking where I'm drawing" thing.
The review for the MSP19U that IanKazimer linked to is pretty glowing, and I'm no professional, so I think it will be a good one to start with.
The Amazon link is empty right now, but there was a post from someone saying that there might be new stock tonight. I don't know if the guy saying that works for Amazon or the tablet company, but I'm going to keep my eyes open regardless.