I am looking to replace a late 2009 iMac. My uses include the standard day to day things (browsing, email, etc.) plus photo editing (Lightroom, plugins and a little Photoshop) and some music (digital audio using Garageband at the moment and transcribe software). Other things like Handbrake, iMovie or other video software are also things that I would use from time to time, but not necessarily regularly. Gaming is not a concern. The vast majority of the time, I will not need the mobility of a laptop, but every so often it might be helpful or needed. I was wondering how much of a difference there is likely to be for my use between a high end MBP and an iMac. In addition to providing the ability to be mobile in the rare instances when I need it, the MBP would allow me to get a separate monitor of my choosing rather than being locked into the all-in-one of the iMac (not that the iMac screen isn't great, but when the computer is outdated the whole machine has to go even if the monitor is still useful). The downside is giving up some power (and therefore longevity?) and that I would be dealing with docking the MBP and the convenience of a single, streamlined device on the desktop. But if there wouldn't be much of a noticeable difference in speed, it might be worth going with a MBP if only to prevent the need to prevent a laptop for those few times I may need it.