Hi Am due an upgrade on my iMac (27 inch) which is used for home and business purposes. Was originally just going to update to the latest 27 inch retina, but am now thinking whether I'd be better off going for an MBP (probably waiting for updated model to be released) and then adding an external monitor, thunderbolt drive, dock etc. This way I'd gain the flexibility of the laptop as well. Is this a good plan - or am I better off sticking to iMac? If is a good idea, what peripherals would people recommend (monitor, dock, drive etc.)? Thanks!!