Now it makes make sense as to why I got my Mac Mini so cheap. Nice upgrades but nothing to make me lust for one since I use it as a music server and to have a Mac available at work.
I'd also recommend going 2.1 and looking at some of the dvdievers from NAD, Arcam, Onkyo, etc. Trying to get BluRay in there now will seriously cut into the SQ as would 3 more speakers.
Google calendar is pretty good. It is the only way I have found to sync my exchange calendar with iCal and thus have my calendar on my touch. So my exchange calendar is my main calendar and it syncs with my phone. Then google calendar syncs to the exchange and iCal syncs with google. The touch calendar gets updated when I sync with my Mac Mini. Moar Calendars!!
So far I haven't come upon any significant limitations. It is currently my primary laptop for anything except running SAS. The monitor is a little small but I can use an external monitor at home and at work. Most of the time I do not.
I use an Asus EeePC 1000H with XP home as a transportable solution with the Pico. It is always with me as my small laptop of choice. I upgraded it to 2GB of Ram and a 320GB internal drive so I do not need to use an external drive. I prefer my Mac Mini as a transport solution in my stationary office rig because I have the choice of optical or USB out but I could certainly be happy with the Asus there if economic conditions force a decision. The Pico is small enough to sit in front of the keyboard on the left side so I can move about pretty freely with the EeePC.