Hi All, I'm currently using an old 800 Mhz G3 iBook and am looking to upgrade before school starts in the fall. Before the MacBook was introduced, I was convinced that my next Mac would be the Intel iMac 20" w/ 1 GB of RAM. Now, however, I'm not so sure. Is the MacBook too good of an offer to pass up or because I already have a laptop should I look to buy a desktop? Should I wait for the upgrades due for the iMac or are they expected to arrive later than September? Thanks for any advice you can lend.