It really depends on what you need it for.
I needed a second system since I didn’t want to lug my tower, the 20“CRT monitor, and a few car batteries and an inverter to run the thing. My priorities were price (I am not rich) and portability.I had no issue sacrificing a bit of power since I planned to do all of my real computing on the desktop system. I also didn’t need the optical drive for the same reason. Besides, I have a USB enclosure for one if I need it.
I couldn’t find a laptop that offered me an acceptable blend of price and portability. And most of the netbooks I tried were anemic and sluggish. The Asus Eee was a joke, the HP Mini 1000 was pathetic, and the otehrs left me similarly unimpressed.
However, the Acer Aspire One was pretty snappy; it could do real-world tasks almost as quick as my tower so I went for it. It only chokes on stuff like transcoding a WMA into an MP3. It seems to play movies and run most games I’ve tried (System Shock 2, Warzone 2100, Fable:The Lost Chapter, and more) just fine, though Fable stuttered a little bit since it needs at least a 64MB video card.
I find most keyboards too large. I am on my tower right now and wishing I weren’t because of the keyboard. My netbook is actually considerably more comfortable for me to type on than any laptop or desktop keyboard, though that is a matter of personal preference. Also, the portability of the 8.9” version is pretty damned good. It’s literally ¼ the size and weight of my friends laptop. I can slip mine into a three-ring binder.
Laptops are better if you want (or need) a bigger screen, need something a bit faster (most people don’t need as fast a computer as they think though; imagine a little old lady driving a Ferrari at 35MPH on the freeway) and don’t mind the extra weight/bulk. They often have an internal optical drive, but I use my drive on my tower so seldom (I transfer stuff via wifi or USB Flash drive) I don’t really consider that to be a plus.
Which way you go depends on what your needs are. What are you planning to use the system for?
@Sarcasm I have 160GB and that is more than enough for my music collection, games, movies, etcetera. And I can hit the CAPS LOCK and the Enter key one-handed with ease yet find the keyboard fine. Like I said, personal taste. In other words, your mileage may vary.