im happy with my 15" pBook... *strokes lovingly*
however, iBooks are pretty much perfect for someone with your needs. They are still quick enough to do any of the required tasks you have. It will take a little longer when doing CPU and GPU intensive stuff, but this is more a hobby for you, not your actual profession, so I wouldnt worry about it.
*ozi storytime* I just talked a 35 year old from my church into buying an iBook. She was having HEAPS of trouble printing off some minutes of a meeting I had emailed her, so I took pBook around to her house. I burnt a CD of music (Evanescence, the first unreleased version, I would buy it legally if it was available) and it only took 3 minutes to burn the whole thing as Audio Format (so 720MB burnt in 3 minutes.... i was happy!)
And then i opened appleworks, plugged the USB for her printer into one of my two USB ports, and Apple detected the printer and set it up (no need to download drivers!) and printed it off straight away!
She was very impressed by the amazing good looks... she also thought the computer was pretty as well. *boom boom*
And then I surfed to
http://www.apple.com.au/ibook/ and showed her the pretty computer, and took her to the educational section (she is a student) and specced out the iBook best suited for her needs.
Now, 5 days later, she tells me its arrived! YAY! she went for the 14" combo, 512MB Ram... its a perfect computer for her, as a student. Im so proud... hopefully Apple will ring me soon and offer me a job as a computer retailer for them!
~ozi
oh and if you are too worried about your iBook getting scratched, you can buy special covers for them. I tried to find the link where I saw this but sorry I couldnt.