I will agree with the comment about the 2.2 being available for an extra 200.
You really don't notice the performance hike unless you are doing photoshop or 3d modeling programs or any other intensive uses (although I notice it being quicker a bit with random normal programs too... just nothing that would be needed) however even from my tibook I noticed a huge performance upgrade when I first got my 2.0 cd macbook pro.
Just yesterday though I got my shiny new refurb 2.2 mbp sr C2D glossy to replace my matte CD mbp 2.0 and let me tell you. It's PERFECT

it runs noticably peppier even (then again I do use mre taxing stuff like windows running 3d modeling programs etc) and the drive is even better.
I didn't notice my CD drive being slower or a little loud, just because it was much better then my tibook, but let me tell you.. the 8x drive is quiet like none other... and the extra 200 for the LED backlit is great. This thing runs rediculously cool and gets AMAZING battery life compared.
You may look into spending another 200 and getting the added better drive, more HD space, LED backlit screen (mine is perfect. no yellowing... it seems with refurbs since they get checked so much that i get less problems with them then new anyway

) and the newer chipset... which willlast you longer and mean updating less... saving more money in the long run.
PS. look into glossy. I was very anti glossy when I had my matte... cause coming from a powerbook I was used to matte, but let me tell you.. after seeing it in class, it really is PERFECT and beautiful and I am now in love. I hated the glossy macbooks... maybe just the size of the screen throws me off? I dunno. Not LED maybe? anyway.. i love this.
2.2 SR refurb all the way!
