The Amiga 500 was, dollar for dollar, the best PC ever made.
I had the original Amiga and it was Crash City. When one application died, it brought the whole machine down with it. Even Windows 3.1 wasn't as crashy; it would crash as much but you could usually save your changes from other programs before it died completely.
Reactionary, if you don't have Panther installed on your Titanium PowerBook, give it a shot. I have a 400mhz PowerBook G4 and it runs like a champ with Panther, but it was pretty sluggish with earlier versions. I was amazed when I tried it, since in the Windows world operating system upgrades are generally not compatible with anything but the most modern hardware, and they're significantly slower than their predecessors. Not Panther; it rocks. Definitely worth a shot before becoming too frustrated.
Hope that helps.
D