I bought a Mini 2011 but it couldn't maintain Bluetooth connection with mouse or keyboard and was only usable with USB connected peripherals. I returned the unit, but was wondering if this was a rare problem, or quite common. I am tempted to buy the quad core one some time later. BTW, to get 1x256GB SSD costs $A240 upgrade, but to get 2x256GB Apple is charging $A1,200. I may not be good at maths, but can't see why it should be more than twice the cost of one!