I upgraded last year to a 2011 2.2GHz Macbook Pro, then added more ram and added an SSD in the optical bay and honestly couldn't be happier with the machine from a power perspective. I rarely see the beach ball, and when I do it's from errors, not a lack of resources. My only gripe is the heat on this thing! When I'm sitting with it on my lap (even making sure not to block the fans or set it on blankets) it gets EALLLLY hot. I know this is just the nature of the beast when it comes to this kind of power in a form factor like this, but I was wondering if anyone had some real-world input as to how the new ventilation performs. This would be a very easy justification for me in upgrading, I'd just like to know that it really makes THAT much of a difference.