I've decided to replace my 2010 MBP with a 2011 11inch MBA core i7 128GB SSD as in everyday use, the MBA is more efficient and portability is important to me (for work). For my needs at the moment (the most I do is an occasional video and photo edit, and lots of multitasking) I feel that the MBA is all I need and aim to use it, ike my previous MBP, as my only computer. Please also note that I also own an iPad and iPhone for non-work daily and mobile use. However, for those big multitasking sessions, I will definitely need a large display at home. Currently, I'm using my brother's basic LG 18 or 19inch display that's not the best quality, especially coming from an MBA screen. Therefore, I have a few options: 1. Purchase the new £900 Thunderbolt Display. It's 27 inches (the largest I will ever have worked with) and seems to have been made for the very situation I'm in, as a display for an MBA or MBP to be hooked up to. Pros: - the 27 inch display - the built-in MagSafe and thunderbolt cables-in-one look very handy for quick plug and play functionality when I come home, as opposed to what I currently do with my pro: plug in the mini display port, plug in another cable for the mag safe, and a final cable for the speakers. And then there's a cable or two that gets plugged in for hard drives and printers. With the thunderbolt display, I can have all these plugged in to the display directly. - should my needs change and I feel I need more power, I can always purchase a decent Mac Mini for a further £600. I already own a wireless keyboard and trackpad. Cons: - the hefty price tag, is it worth it compared to the base iMacs? - the base 21.5 inch iMac is only £100 more than the Thunrbolt Display, and the 27.5 inch base model is £500 more. - no optical drive (although again, should i need this in the future, I can purchase a separate drive) 2. Purchase the £1000 21.5 inch iMac. Pros: -It costs only £100 more than the thunderbolt display (note a £100 difference is a bit more than a $100 difference). But if I sell my current wireless keyboard and magic trackpad (as the iMac comes with these), then this iMac will cost the same as the thunderbolt display. -I will have another machine that's very powerful too -will give me an optical drive unlike the display -more future-proof. Should i need the power, it will be there for me. Cons: -the screen is only 21.5 inches. I would LOVE a 27inch! So this is the big question: is it worth it to get the thunderbolt display over this 21.5inch purely for the bigger display? -even though it's £100 more, the higher the price goes, the less affordable it becomes. -I don't think I need (at this moment) a second machine or it's mighty power. I already own an iPhone and an iPad, and a second work machine in addition to the MBA means I have to maintain two workmachines and ensure they're in synchrony with each other, etc. 3. Purchase the base £1400 27.5 inch iMac. Pros: -similar to above, plus the main thing that it's 27.5 inch. Cons: -similar to above - at £500 more, the price is extremely heavy (possibly out of my range; the heaviest purchase I've ever made if I do go for it) but part of me keeps saying that it's ultimately worth it as for £500 extra I get a quad core machine, optical drive, etc. So as you can see, I'm pretty conflicted. I'm currently inclining towards the Thunderbolt Display but parts of me keeps telling me to sacrifice the screen size and go for the 21inch iMac (with internals I don't currently need but might need in the future maybe) for a relatively similar price. Again, for those who have the 27inch screen, would you give it up for a 21inch in my position?