Wifi work well ( I have changed the wifi card)
Sound work well
Video quiet well ( I have sometime artefact )
Sleep work well
bluetooth work well
SD card reader no work well

X1 can handle 2Gb of ram, since DDR2 400Mhz is forward compatible with newer ones; I just side in a 2Gb DDR2 677Mhz & now it show 2GB in the system (it should be able to handle vista now). So I would say the RAM is almost a tie.

The size of X1 is just uncomparable to the Air, when the x1 can slide into a regular 3-ring binder; while the Air can be damage inside binder. Only if the X1 had a 12.1 inch led screen, it could be even lighter than the eee. A sheet of paper cover the whole laptop with 1/2 a inch to spare on the wdith & The height is 2 DVD case stack-up, which is not bad at all.

OSX is neat & slightly nicer to use (I have been using it for 1+ year now), while XP is just as stable, reliable & more control over the system. I would probably willing to pay $50-100 more to use the OSX for it’s slight advantage, but not anymore.

Value wise, X1 was about 2k when it came out, while the Air is slightly cheaper when it came out. If you are deicde between the 2 now, the X1 is $500-700 from ebay, so…
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The missing ethernet port is a deadly for a business traveler with little IT expertise, who can’t check his/her e-mail at client’s site through a firewall.

I do think the Air will good enough for regular use in the next version probably in Sept with a 45nm CPU with higher speed & longer battery(maybe a real 5 hr) & hopefully a second USB port + ethernet port.

So, did I have serious buyer’s remorse when they announced the Air? or when I stopped by my local Apple store to check one out? Maybe for about two seconds, because I am a Mac geek, but not really. I’m afraid the MaBook Air is Steve’s latest Cube. Super-high on cool and it’d be fun to have one… but not practical enough to justify the price tag.

With the X1 I can just sync all my Mac files to an 8GB Compact Flash Card, pop it in the X1 (running Windows versions of Office, CS3 and Thunderbird for e-mail), and there isn’t a moment loss in productivity. The smaller footprint and 2.5lb weight make it easy to throw in any bag and use anywhere, and the integrated CF and SD slots mean one less cable/card reader to carry in my bag. And really one of the big deal-makers for me: the X1 has a Firewire port. To top it all off, I patched my Mac OS disc and set the X1 up to dual boot if I really need to run OS X for something.

* you neglected to include a “software options” category. Most people considering the MBA would choose OS X over Windows or Linux, so this is important. Furthermore, the MBA wins it hands-down as it can run everything the X1 can and more.

* you included both “Connecting extra peripherals and such” and “Connectivity” so you could double-count the lack of Ethernet.

* you used an odd definition of “size” when two simpler definitions (thickness or true volume) would have made the MBA win.

* you morphed “screen resolution” from “pixel count” into “size” so the X1 would win.

* you morphed “power” into “battery life” so the X1 would win. (These should have been two distinct categories.)

* you morphed “RAM” into “serviceability” so the X1 would win.

I find this tactic not only dishonest but obviously so. You’re not likely to convince many people in this way.

You also make an assertion that amounts to: “the processor in the MBA totally owns the one in the X1, but you can change the battery of the X1 so it is more powerful”. Talk about spinning it! You are comparing apples and oranges here (no pun intended). Those are two separate categories: the MBA wins one, the X1 wins the other one.

And regarding the batteries, you failed to take into account battery life: the article you link to mentions 2h 40m, though it’s not clear what is the load. Walt Mossberg (WSJ) and Edward Bay (USA Today) got 3h 24m and 3h 40m from the MBA, with full screen brightness and WiFi on, while surfing the web and playing music. (Of course you can get the larger battery for the X1, but then you lose the weight advantage).

Also the conclusion of the RAM comparison is silly: when you buy RAM, you notice if it’s flaky in the first few weeks (usually in the first two days, but let’s assume weeks). If you don’t have problems with it during that time, it will normally outlive the useful lifespan of the computer. And if during that time the RAM in your MBA fails… guess what, it’s under warranty, Apple will replace it!

All in all, you made a fairly mediocre comparison, to be honest.

I don’t understand why everyone is going on about how thin Air is. For me the footprint is much more important. The Air has the same footprint as the MacBook!!!

And I hate glossy.