So the London Regent Street store had them in today for viewing only. I tried to use them and compare my experience with the MBA13 and the MBP13 asap. All the models on display are 1.1. The colours are all tastefully muted. I was afraid the gold would look guache by it was tastefully matte and pastel, not shiny neon or bling. They are light but given the hype they aren't as light as expected. You can easily handle them with one hand. They feel fragile compared to other models. I would not want to put it in a bag with hardback books. The screen is good as per expectations. The keyboard. I tried to like it. I really did. I thought.. It'll take some getting used to. I typed for about half an hour in total for about five mins at a time. The lack of feedback gives me pain .. RSI? You never knew when a key press was registered. I couldn't relax and type.. It was stressful. The MBP13 and Air I tried didn't have this at all. Really I can't see myself typing more than a few sentences with the rMB keys. The larger key size didn't seem to have an impact. GUI was terrible. You could feel it groaning to resize windows, swipe to new desktops. It wasn't fluid and that jarrs and adds stress. I tried these tests in different laptops in case one was left in a bad state by a previous user. No change.. All the GUIs struggled. Some users wont mind if they're used to a slower laptop but even my old corei3 windows7 has a snappier ui. Also tabbing between Mac apps was also not snappy. Also the notebooks size did make me feel all cramped and hunched over the device.. Even tried different heights for myself to mimic sitting at a cafe table.. No improvement. The resolution was set to native for all the four rMB and the MBP I tested. Using the setting dialogs felt smoother on the MBP not the rMB which felt asthmatic! I thought the ssds were supposed to be super fast. Yet some apps took noticeable seconds to load. Photos was ok but not snappy. It felt much smoother on a MbP13. As did the UI when I tried it a few minutes later. Only Safari seems fluid and I guess they tries hard to get this right as most people will live in web. Performance.. They don't let you install chrome as an admin pass is required. But I managed to install IPython from Anaconda. It ran sure... But it installed slower than the MBP. It has a heavy installer to be fair. Running a script to repeatedly do a matrix.multiplication confirmed the of course the MBP was faster. But the rMB did it.. So it is possible to code. Editting via photos was doable but you could feel the rMB struggling but it didn't actually fail. The MBP felt smooth and effortless. It got hot!!!! Noticeably. I'd worry if I didn't know it could look after itself and throttle. Didn't try sound but youtube via safari seemed equivalent between the MBP and rMB running a HD tube. Overall Its not impossible to do stuff as others have confirmed. BUT the pleasant experience isn't there. The UI lags terribly which is Apple fault as 8yr old computers have snappier UIs. The keyboard is not for regular sustained use. So not essays or coding. Don't buy it if you'll constantly regret every lag jitter and delay. I may try the 1.2ghz and 1.3 if they help the UI. Conclusion Its a social media, web and consumption device. Really not pleasant to create content. Is it really worth £1x00? I can see gen4/5 be stunning devices if the UI is fixed and the keyboard too. Personal opinion I think the underlying hardware is probably fine. Its faster than laptops 5years old. But. My opinion is that Yosemite is too slow and bloated especially the UI. A 5+ year old £300 laptop shouldn't feel snappier but it does. My android nexus 5 has way more pixels (1920x1080)to push than most laptops out there and is still more fluid with its GUI. Bonkers. If I remember more I'll update. UPDATE I never expected this to be a MBP for sustained processing. What I personally didn't like was that for basic desktop operations and experience it felt worse than an 5+yr old £300 desktop. A valid challenge is this is pushing too many pixels than it should but that doesn't excuse the user user experience even if it does explain it. Update 2 I forgot to say the only people who seemed really happy with the device, cooing over it like a baby, were those commenting on its appearance not its technicals. Apple is increasingly a fashion brand, in line with the new had if retail I guess (personal opinion) Update 3 Yes the keys show finger gear easily and it's noticeable. In fact a chao in an apple T-shirt was busy cleaning them with a cloth between people playing with them.