The iMac in my sig is my current "flagship", replacing my previous flagship, a late 2007 iMac 20" 2.0Ghz (the first aluminum model) that was stolen late last year. It's my master music workstation when I have time to tweak some filters, and my main iTunes Home Sharing server otherwise.
The MBP in my sig, although almost as powerful, is more of a portable media center/Internet client for trips, with the occasional website or two when I'm not near my iMac.
My "flagships" during my life so far, in forward chronological order:
- Quantex 486/DX33 PC with Windows 3.1, a nice little bit of kit back when Quantex was still a good company. Upgraded it myself to a Pentium/83.
- Compaq Deskpro EN 400, with Windows 95; eventually upgraded to Win ME, and had no real issues with ME like so many others have.
- Self-built Athlon 64 3500+ PC, with Windows XP Pro. My experience with transplanting expansion cards into the Quantex and Compaq helped out a lot here.
- iMac 20" mentioned above.
- iMac 21.5" in my sig.