I too bought the Acer Aspire One and it is a good size for travel, not too big, not too small, although I'm sure many would disagree with both of those. Keep in mind these are called "netbooks" because they are primarily intended for using the "network" i.e. the web and not for writing your next novel on. My complaint with the Acer was, as I knew, it didn't come with a DVD/CD writer/player so I bought the companion USB player that Costco promoted with it. It turns out that it will not play the sound of DVDs (it will CDs). After many calls to the Costco "Concierge Service" (who was generally unhelpful--they said they didn't cover DVD player issues) and searching the internet, it turns out that Acer packaged an old dumbed down Windows Media Player with it and it doesn't do sound. For that, you need to download a $15 "decoder" which I haven't gotten to work yet either, although I think I will. Part of the problem was that the Media Player was not only dumbed down, it was a 2002 version which had to be upgraded. Other than offering to let me return it, Costco has been totally worthless in helping or even caring that they sold a package that doesn't do as one would expect. They blamed it on "a supplier--we never even had possession." Generally I'm OK with Costco but not this time. Anyway, I know I shouldn't use this site to rant against Costco, but I just want to recommend buying from a store where they will personally assist in getting the machine and any peripherals to work.
Steve in Olympia