Yes...this is true...the 2008 MacBook was metal. But out of all 4 years & 19 out of 21 MacBook models that were manufactured...other than the two 2008 models...all MacBook housings have been made of "plastic"...most of them white...but some black models as well.
I didn't realize this this was going to turn into a MacBook history discussion.
I was assuming that your initial post was referring to the comparison between the currently available 13" MacBook (which is white plastic) & the currently available 13" MacBook Pro (which has a metal...aluminum).
Basically the biggest differences are the:
- Plastic vs. metal housing
- no backlit keyboard on the MacBook
The MacBook Pro (IMHO)...is definitely the better deal...since for just $200 more you get the:
- metal housing
- SD card slot
- double the ram (2gig vs. 4 gig)
- backlit keyboard
HTH,
- Nick