I bought a 1.6 GHz, 80 GB HDD when the original MBA was released. I used it as a writing tool. I sat on the couch, on the patio, at the park and etc writing. It is great for a writer. But, it is very slow to do video... my wireless was weak. I was never that happy with the battery life. I always felt like I got a "bad one." But I talked to others that said the exact same thing.
I did attempt to run CS3 on it, but was very unhappy with it. I was very unhappy running anything other than Pages (iWork), Word, email, and Safari. It seemed to drag when had too many open apps. I always closed each app then opened the one I wanted to work on. It SUCKED!
The first version MBA was simply a netbook. The new MBA in either HDD or SSD is a REAL MACBOOK in Air form. I would strongly advise anyone/everyone interested in a MBA to save the extra money and buy a RevB MBA. The differences are night/day, black/white...
I plan to upgrade to a new MBA revB soon from a unibody aluminum 2.4 MB. I have clients with the MBA revB in both 1.6 and 1.86 in HDD and SSD. For normal use, the HDD is nearly as fast as the SSD. I have worked on three of the four MBA revB (1.6 HDD, 1.86HDD, 1.86SSD). I will say that the SSD boots really fast. And it opens apps nearly instantly. BUT, once an app is open, I didn't notice any difference. Also, I didn't notice any difference at all between the 1.6 and 1.86 running HDD.
Here's the thing, both the low-end and high-end MBA revB computers have an Nvidia GPU, 2 GB RAM, 45 NM Penryn chip (very little speed differences), 6 MB L2 Cache (this is BIG), and an amazing display. Based on all that I have seen, I would recommend that people spend the extra money and get a $1799 MBA revB 1.6, 120 GB HDD. I would NOT recommend spending the extra $700 to get a slightly faster processor or SSD which boots the computer twenty seconds faster for normal users.
I bought the new unibody MB and went from five computers to ONE. Then the new MBA was finally shipping and I saw the differences while working on the revB MBA. The displays on all of the MBAs I have seen have been beautiful. I have seen maybe seven MBA revBs and never seen lines on a display. I really think that it is not as big of an issue as people make out here. I do plan to migrate to the MBA revB 1.86 SSD. Now, why would I do that when I know the differences are minor??? It's a business deal for me, and I will use it for business and I WANT (don't NEED) the extra speed for bootups. When working with clients, I want it to boot as fast as possible. For business, the $700 is worth it for me.
So, BUY A REVISION B, MBA. Instead of using two computers, sell your "other" Mac and use the revision B MBA as your only computer. It will work for most as a primary/sole computer. The MBA revB doesn't need to be a second computer or a netbook.
If you just want a netbook, buy a MBA revA. If you wait another two months, the price may be $799 for a refurbished one from Apple.com.
One more thing, I cannot wait for MBA revC. It should be amazing. I am hopeful for...
2 GHz Intel Core 2 Duo (6MB of L2 Cache - or maybe 8MB of L2 Cache)
4 GB RAM (I really want this)
256 GB SSD
Glass display (if thin enough as to not weigh it down)
Glass trackpad