My local BestBuy actually had a pretty nice display with all of the current Macbook offerings. There's no doubt that this is a stunner of a machine. My favorite is Space Gray. It really looks stunning compared to the sea of (frankly now boring) rest of the Macbook line.
I picked it up from the table. It was definitely very light. Not quite as light as the feeling as I get with my SP3 without the keyboard cover, but close. As usual, Apple has balanced the machine really well too. Something that many PC manufacturers cannot get right. Feels great picking it up.
But. I do think a proper Retina Macbook Air would have hit the sweet spot. Maybe keep this one in the lab until the time was right for it to come out. Right now, it just seems too compromised as a real useful machine for its price point.
We have to remember, there was literally nothing like the Macbook Air when it first came out. Yes it was pricey, but in that form factor there was nothing like it.
In contrast, the new Macbook is slimmer than the Macbook Air, but it isn't really category defining like the original Air was. I remember seeing Jobs do the demo with the manila envelop and it really hit home how radically different this was from anything you could get.
Remember, there weren't iPads at the time, and there weren't "Ultrabooks" either.
I have grown more and more fond of my Surface Pro 3. It seems like there might have been an opportunity for Apple to make a truly affordable Macbook by going the Atom route like MS did with the Surface (non-pro) 3. Maybe something a little cheaper but still well built. The Atom and the Core M are not hugely far apart in performance terms.
It would have captured the spirit of the older Macbooks.