I am sorta kinda in your situation. I have been using wacom since 05, but my first experience was with the college's intuos2 which were pretty darn good. My first wacom that I owned was the graphire4 which is half the pressure sensitivity. My graphire4 wire turned green in certain spots and just died yesterday. I contacted Wacom about repair which is $62.50 plus shipping. However, the guy told me that the bamboo is the new replacement for the graphire4. The bamboo pen has the same sensitivity and the bamboo pen and touch has twice as much sensitivity. The area that you have to draw with is kind of smaller though. That is my only issue at the moment. I am afraid that it will affect my actual stroke or something haha.
You can pretty much accomplish the same task as the most sensitive models. You have to do some adjustments and what not but it should work out fine for you. Right now I am just trying to decide if I want to pay less to repair or pay slightly higher for a new wacom but smaller work space. ($20 or so more with smaller space....mmm but more sensitive with pen and touch) AAAH!! lol I hope I helped you out just a little.
I always try to make something cool to go here...