Oh yes, I also believe the Intuos 4 to be a serious artists tool. I used the medium for the review, I'm sure the large is mighty impressive. The tablet is fantastic, and the nib on mine also seems to have stopped compression now. It was my first initial worry, but it appears to be fine. I still put a smooth paper over my board when drawing, as I'm just touchy about finger prints and such. I love it, what can I say? ^^
Glad you love yours too. It just makes art creation that much easier, and makes you wonder how you've gone so long without it. I use to be a mouse artist as well, which took a lot of patience, so I know where you are coming from.
I'm continually impressed by Wacom and their tablet technology. Having used the Intuos 3 and Intuos 4 I can pretty much say Wacom would always be my first choice for PC art tools.
Best of luck with yours!