Hello everyone. I'm a new guy here, been reading a lot lately though and I enjoy this forum very much. I'm an American musician living in Tokyo, and I'll soon be purchasing a powerbook 1.67 with superdrive. My questions have to do with chosing a 15" or 17" model. Honestly, I think the 17 is too big and I'd rather get the 15 and max out the ram etc...except for TWO things that concern me. First is the optical line in/out, which is ONLY available for the 17. How useful is this? I own a mini disc player and do a lot of personal recording using it, with the optical will I be able to download my own recordings digitally etc? What other uses does it serve (compared to the 15 inch with analog)? How much better is the quality? Am I missing something as far as what I can/can't do with it? Is there any kind of adaptor I could buy to modify the 15" PB? The other concern has to do with the VRAM (I think that's what it is, the video capability or whatever...you can tell I don't know much about hardware!). The 15" comes with 64MB, correct? And the 17" has 128? And this is not in any way upgradable? I read that expose, used with more than a handful of windows open, runs "choppy" on only 64MB. I read also that 128 was the sweet spot, with 264 (impossible for the PB's, I imagine?) being perfect. Is there any truth to this? And, if so, does that make the 17" powerbook a far superior machine? Money isn't a big issue, since I'd have to spend a couple hundred bucks maxing the 15" out anyway (I need lotsa ram for soundfonts, and other music stuff, and my finale software and other music software is pretty graphics intensive) so the cost is almost the same. The only thing that bugs me about the "17 is the size (I'll be carrying it several times a week!), and also I think the 15" looks cooler. Again, how important are the above "funtional" questions, versus my wanting the computer that I LIKE and would be more comfortable carrying? Honestly, if I could max out the 12" easily I'd rather get THAT, since I want a small computer, but I don't think that's much of an option. Thanks in advance!