THe Performance is better than I expected for a Core M.
As a user of the 2011 MBA with i5, you have enough power for your web browsing, light office work, maybe some coding and text editting.
Exactly what most average users use. in a small form factor, with no fan, it's not a bad computer
The lack of a 2nd USB-c port is a bummer, and hopefully v2 will remedy this
the big stopper for me is the price. if this computer is aimed at "mom and pop"http://www.labour.gov.on.ca/english/es/pubs/guide/severance.php so to speak, the price seems high.
Nevermind that in Canada, this is a $1549 laptop (tax not included). when shopping, if you consider viable alternatives, there are alternatives that are cheaper, with better performance, with less tradoffs in the port numbers.
As someone who tends to be progmatic and recommends the best product for the job at hand, this would be a bad buy because the size difference is fairly negligable, for the trade off.
An example of what you can get from Dell (first thing that popped into my mind, don't currently own any dell products).
http://www.dell.com/ca/p/xps-13-9343-laptop/pd?oc=nxps134_f_s003e&model_id=xps-13-9343-laptop
Dell XPS 13" laptop
i5-5200u CPU (better than MB) ,
8GB RAM (Equal)
128gb SSD (MB wins here, 256 is $200 MORE MAKING this laptop 1699 instead of 1499)
3200x1800 Touchscreen display with 282ppi (Better than MB)
2 x USB3, MiniDisplay port, SD Card reader, earphone jack, Locking port (more options than MB)
based on these alone, the MB is a terrible deal. But, We must consider size and weight in this since there is a tangible there.
MB Dimensions
1.31cm tall, 28.05cm wide, 19.64cm Deep
XPS Dimensions:
1.5cm tall, 30.4cm wide, 20cm deep.
Difference in favour of MB:
0.21cm tall, 2.35cm, 0.36cm deep
Weight:
MB .92KG
XPS 1.18KG,
Favour of MB .26kg
So, in it's current state, unless you must have the absolute smallest, Lightest package available running OSx, for the current expected cost of the MB, most users would be better served by the Dell, the MBA only wins out on size, weight and base storage
the difference maker will be the intangibles. That cannot be easily quantified and I have not taken into account personal opinions or experiences one may have had and obviously those are all personal to ones self (looks / feel)
however, if Apple could cut the cost by $100 even, or $200, they would seriously have a contender for Great buy. This is similar to the V1 of the MBA where Apple completely misjudged
EDIT: adding battery info to comparison
Dell claims 12 hours on this model per charge: since it has been out a short while, Reviews have been able to hit 9.75 - 11 hours of use.
http://www.anandtech.com/show/8983/dell-xps-13-review/6
Apple is claiming 10 hours of video playback.
without tests I cannot claim anything as it i hard to compare claimed battery life vs real tested battery life since different testing methodology can be in use. if the Apple hits the 10 hour claim, i would rate it equal to the Dell since they both should be around the same battery life