Ok, so I got around to ordering a base 21.5 over 3 weeks from Dabs.com as they were offering a price cheaper than on Apple.com ...Anyway, it dispatched and I had that horrible niggling feeling that I should have gone with the 27... so when it arrived, I called them right up and asked for it to be returned (it was unopened) and that I'd like to pay the difference for a 27. This is where it went all wrong... To cut a long story short, Dabs seem to use a moronic customer support ticket system which NEVER assigns a ticket to the same customer support rep. So, in other words, you end up in a never ending circle of having to constantly explain your request, only for it to be replied to by a completely DIFFERENT person who has no way of seeing previous notes/emails. I have a an email conversation of SIXTEEN emails where I am asking the same questions, and each time, a different support rep replies with a completely different answer. To make matters worse, although DHL confirmed delivery, Dabs claimed to have not received the returned iMac (which "showed up" a few days later apparently...) And here's the real kicker... I was advised to order the 27" whilst they processed my refund so I did (stupidly). It showed delivery 1-2 days which is fine... but they didn't even have it in stock although their system did not flag this on the website or during the sales transaction. So, now, I have a charge on my credit card for a 21.5", a 27" and neither machine to use. I just this second sent another email and got a completely different person telling me that "once the item is booked in, the fault will be fixed" - WHAT BLOODY FAULT?????? Seriously, I'm shocked at how bad their customer service is and now I can't order a Mac from Apple (which is what I should have done in the first place...) until they refund both orders. *sigh* So, if anyone here is planning on buying from Dabs.com... D O N ' T. I have no idea what to expect now. I can't believe these amateurs are "authorized" apple resellers.