the older version kept freezing.the aluminum works fine ,however it keeps shutting down on his own ,because i had connected second monitor ,so had to unplug that it would get to hot and just shut down thats what people from apple told me .and i don't have windows, so suit yourself. i don't think those new imacs will do any good to apple there is a lot of people complaining about them and while i was at apple store with my problem there where another 4 people with aluminum problems .
I hate Mac's and I hate Apple products in general, I find the software very non-intuitive - yet it doesn't bother me to be bullish on AAPL once in while, go figure.