It would be my home machine.
So, Internet, DVD playin' (burnin' if I had the iMac or buy a SuperDrive later), light word processing, some programming when I work from home (which basically means SSH and IE), and the odd game here and there. Certainly no Photoshop, FCP or anything like that.
It is a closed box, but I can always bump up the RAM, apparently. Other than that I don't know what I would want to upgrade. I do not need a better video card or sound card. Who knows what tomorrow will bring technology wise but I would think that by the time something that was "must have" came out that I could not use it will probably be a few years and time for a wholesale upgrade anyway.
Expandibility is great but most of the great new technological advances that would cause one to consider upgrading are mobo advances and could not be added to a PM (i.e. PPC970, PCI-x, faster FSB, real support for DDR, etc).
The only thing I could really see being upset about not being able to expand is the HD space. However, FireWire HDs are dropping in price.
I'd be losing the bigger cache and many people seem to feel that it makes a big difference.
So, we'll see. I think having the PM in front of me will make me keep it, but I am really interested in what those more knowledgeable about Macs than me have to say.
