i wonder how some forumers managed to crash their mac or get virus on them. I've used both PC and MAC, both in school and at home. The jobs are not merely surfing web or text editing, i use them for major rendering of architectural models, 3D visualisations and modelling, CAD and also complete suite of Adobe CS3, with photoshop, illustrator, lightroom. All these on my imac, and nothing has crashed. I've used photoshop, Artlantis render and Lightroom all at the same time, and it has never slowed down my comp. I've used the same range of softwares on a Windows Desktop too..but somehow it just doens't match up to the mac. and it crashes when too many applications are running. the host of virus and anti-virus software used on the Windows PC slows down the comp too much. I'm much happier and more productive on my mac. Looks factor..its just a gimmick and plus point..the performance factor is what matters.