I'm not a fan of Acer, would prefer Asus or Samsung, but don't discount those little netbooks for regular office/home productivity and recreational use. Their main issue is screen size but you're trading off screen real estate and computing power for an incredible improvement in size, weight, portability, and battery life. Try using a 15" or 17" notebook/laptop computer on a plane in coach class. Not going to happen. I hate bringing my 17" notebook on trips, it's such a brick.
I've been running Win7 Ultimate on my netbook for a few months and I have zero complaints. Do I try to run games, Photoshop, or Visual Studio on it? No way, the screen is too small. But it's a great digital companion, dozens of gigs of music, fast wireless (and wired Ethernet), snappy Chrome web browser, video, office apps, built-in camera and microphone (hello Skype!), bluetooth, a true 2.5 lb laptop that fits on your lap and runs on battery for 6-9 hours. I also have a 15" and 17" laptops and I'd say that my little netbook could suffice for 85% of the tasks that the larger laptops (the Slabasaurus Rex) are used for. For the most part large laptops stay desk-bound and plugged into the wall 90% (or more) of the time. The netbook spends 90% of its time unplugged and wireless.
My only advice on netbooks is to spend the extra $25 to max out the memory, get one with a hard drive (SSD or spinner) of at least 60 GB if you want to bring along music or videos, and be sure to check out the keyboard ahead of time. Some of the brands have a couple of oddball key placement issues.