I basically just use the best tool for the job.
My Windows box (i7-2600k/gf 570gtx) is basically a media centre system, connected to my main bigscreen lcd tv and is used for dvd/bluray and modern gaming (although its also set up with emulators and whatnot). I also do a little browsing with it from time to time, but inside a VM (I'll be damned if Im letting the main install go online after all the work Ive put into it).
Apart from this Ive got 1 core2duo@4.1ghz+gf 9600gt that I dual boot between aros and Windows. Not as powerful as the main system obviously, but AROS behaves nicely and performs quite well on it (fully supportded) and performs well enough with Windows software I cant live without (3dsmax and paintshop pro mostly). It also gets used for a lot of dev. centric pdf docs, either on Windows of AROS seeing as amigaos has no good pdf viewers for more recent pdf standards (it sits next to my amithlon machine and a1200).
I've also got another core2duo@3.86ghz that I run OS3.9/amithlon on. Probably my most used system and I do most of my everyday computing on it, plus use it for any system friendly development, lightwave3d, irc, webbrowsing, tv paint, imagine fx, hdrec, etc.
My a1200 gets used for custom chipset hitting development, some 2d pixelling, some gaming, scene demos, and fooling around with the plethora of classic software out there.
Last but not least my mac mini, which is running unregged MOS. While Im impressed with MOS so far I must admit to not using it a lot. This will probably change once I register it, but for now Ive mostly just tinkered with it, familiarising myself with MOS.
