A well-oiled windows machine will run pretty decently. I just bought Windows XP Pro for this machine I just built, just so I could have windows. Sure, I can run all my apps perfectly under Linux, even using WINE, but I also have decent anti-virus, as well as know how to maintain the system so I don't have to do much. I do about as much maintenance on my Windows machine, as I do my MacBook.
If you want, you can opt for a PowerBook G4, or iBook G4. I would avoid the Dual USB iBook G3s, as those things are utterly crap, and I would know, since i had one that went in 14x before I got it replaced (by apple) with an iBook G4 1.2Ghz.
You have another option, and that's Linux!
Yes! Do Linux! you can get close to OS X as much as possible, and have the stability and security that OS X has, as well as a lot of the compatibility of Windows.
And what's the best of all? IT'S ALL FREE!!! That's right! you can get ALL your software for free! Then if you want to run Windows, go get VMWare Workstation, or Suns VirtualBox that allows you to run windows for absolute software compatbility.
Just my $0.02
If you want, you can opt for a PowerBook G4, or iBook G4. I would avoid the Dual USB iBook G3s, as those things are utterly crap, and I would know, since i had one that went in 14x before I got it replaced (by apple) with an iBook G4 1.2Ghz.
You have another option, and that's Linux!
Yes! Do Linux! you can get close to OS X as much as possible, and have the stability and security that OS X has, as well as a lot of the compatibility of Windows.
And what's the best of all? IT'S ALL FREE!!! That's right! you can get ALL your software for free! Then if you want to run Windows, go get VMWare Workstation, or Suns VirtualBox that allows you to run windows for absolute software compatbility.
Just my $0.02