Starting with the last question first - there's an old adage: if it looks too good to be true, it probably is.
Stay away from these guys - very far away! Read on:
http://www.resellerratings.com/seller_info...3#comment329103
Ah, yes. I suspected as much, but I couldn't confirm at ConsumerReports or the Better Business Bureau. Thanks for the heads up.
You may want to check on the maximum RAM possible in those 'older' models, also. I think they are limited to 3GB whereas the latest can go to 4.
Bus speed is probably next in important to drive and CPU speed, at least if there is a lot of data transferring (video/image/music editing/changing/playing) going on.
Yeah, that answers my #2. Like I said, I didn't think I would ever upgrade the RAM (because in several years I intend to purchase a desktop), but then I read...
I found 2G ram sufficient until I tried to run Parallels, along with 3 or 4 other programs. So I jumped to 3. 2 was plenty until I threw everything at it at once.
One consideration I found important was the speed of the hard drive. Stock is 4200 or 5400 rpm, some built to order have a 7200, but then I tend to have 7-10 applications open at once, and most are Adobe products. The faster the better.
Yeah, I definitely want to be able to run Windows. I remember on my old Powerbook G4 (the first model, from autumn of 2001) I got Virtual PC, and it was just useless because it took ten freaking minutes just to explore a directory.
So if you were making this purchase, considering your usage, would you want a model that could be upgraded to 4GB? Or do you think 3GB would do it (or at least for 2-3 years, before I buy a desktop)?
Also, the stock hard drive is 5400rpm on all of these. How much would it cost to upgrade to 7200rpm? Also, is there a cheaper way to upgrade RAM? I went to the Apple store just to get an idea, and they charge $700 to upgrade the latest MacBook Pro's from 2GB to 4GB. That's almost a 1/3 the price of the computer.
Thanks a bunch, guys. This has been unbelievably helpful.
Mayo, thank you. That is one of the all-time greatest posts I've read in any forum. You couldn't have more precisely answered my every question (especially those unasked). Beautiful.
I've bought it from several places but sometimes they go out of business due to the price fluctuations. Best bet is to stay with the longest operating company you can find and one that offers a lifetime (question is,
whose "lifetime!"

) guarantee and compatibility with the machine you're buy RAM for. The last RAM I bought (5/3/07) was 2 matched 1GB chips for $119 w/shipping from OWC. I have also bought from other places, but not in a long time. Others here can give more current vendor info for the exact RAM you'll need.
And thank you, Airbus. Yes, I'm more into reliability and consistency than saving a few bucks. All I need is one reliable vendor. OWC it is. Thanks for letting me know about them. $119 is a much more appealing number than $700.
Once again: you guys are awesome.