I've been running Tiger on my PowerBook for just over a week and it definitely has its share of quirks. I can't say I've seen any OS-generated crashes yet. Hopefully some of the oddities will get corrected soon after its official release on the 29th with a web update.

I suppose I'll be using a Windows system at home for a long time to come, but I can't ever see myself using any current version on a notebook. Mac OS still lacks a bunch of really small things that I just learn to live with, but it more than makes up for it with its more intuitive annd robust support for tech I use every day (like WiFi, etc..)

Bruno