***My apologies if this was asked before**** I am making the switch after the WWDC conference - waiting to see if anything interesting shows up at the conference to prevent buyers remorse. I am looking at both the 12" iBook and the 12" Powerbook as my first Mac because I am used to having a laptop, love the portability, and am willing to sacrifice a little on the power. I have been hearing so much about iLife and am wanting to get into iLife deeply using all aspects of it. I am also wanting something that's not only going to be visually impressive to my family, who are all Window users, but performance impressive since I have been bragging about OS X for the past year. I can purchase 1 GB of memory AND a Lacie 16X Dual Layer DVD Burner with the extra $500 dollars it will cost to purchase the 12" Powerbook Combo with 512 MB. I've read somewhere that it's slower to burn a DVD using an external drive, which makes me looking more at the 12" Powerbook SuperDrive, but that's $700 more than the 12" iBook. My questions are: 1. Will I be able to do everything that I want to do with iLife on the iBook? 2. Will I see any extreme performance differences using the Powerbook over the iBook? If so, is it worth an additional $500? 3. Will I see any extreme performance differences using an internal DVD burner over an external DVD burner? If so, is it worth an additional $700? 4. Will 1 GB of PC2100 (266 Mhz) memory on a 133 Mhz FSB be faster than 512 MB of PC2700 (333 Mhz) memory on a 167 Mhz FSB? Any other machine configuration suggetions are welcomed. Thank you all in advance.