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I would buy a 15" MBA for home and business use locally at client offices, and I would have a 13" for airline travel. I think a 15" could weigh in at 3.75 lbs. It would add more cooling space and room for a dedicated graphics card. I don't care if it's called an MBA or an MBP without optical drive.
I doubt we will get a 15" MBA anymore. There just isn't the margin available in the MBA due to the economic downturn and price slashing. If the economy were doing well, maybe.
I wish Apple would either lose the optical drives in MBPs or make them relevant with BluRay. The MBA's form factor has to be what Apple intends to do with all Macs in the future. The problem is Apple wants everyone to download digital content while some buyers want BluRay and others want no optical drives.
I would buy a 15" MB Pro Air. With Arrandale coming out soon we just might get a 15 air.
I have always thought that the 15" apple notebooks have always been the most efficient in all dimensions. Gives you more screen space than a 13. Not as big as a 17. Cheaper than a 17 but more power and more options with ports than a 13.
Just a good all around compromise between big little mega and small.
To me the 17" is a true pro machine. You need the screen space, Processor power, HDD space, the 34 card slot, CD-DVD Read write capability. Essentially a portable (luggable) desktop. The 15" is just a little more portable, lighter, and somewhat cheaper (you could call it Prosumer). With a 13 being the basic pro a little cost cutting in display and specs but still a lot cheaper than a 17 or 15, and for people who don't want a Plastic Macbook but love the aluminum look.
The Scottsdale Quote Highlighed in Bold Italics and Underlined is exactly the way I feel, but only in a 17". And even then Do you really want to watch a BluRay on a 17" screen or hell even a 15 or 13" screen. The 13 and 15"s should not even have an optical drive in my opinion. If they put Bluray in a 17 thats good. BUT
When the new iMacs came out and I found out no BluRay I was pissed. I wanted to buy a desktop mac with a great screen and Bluray inside to watch on it. If apple doesn't release the current iMacs with BluRay next revision then they have lost their minds. That screen in the iMacs deserves a True 1080P format to watch on it.
Personally the 17" MBP and the Macbook may soon be the last Apple laptops left that have Optical drives in them.
If the air is rolled over into the pro line with 13" pro (airized) 15" pro (airized) the 17 would be the last and only full featured notebook apple sells. With or without a BluRay capable drive installed.
And once again YES the air is the future of apple design. Has to be.