Acer's stuffed decent hardware into an all-in-one (AIO) that only really suffers from having a small display screen.
Despite the quad-core processor and 4GB RAM, the M3200 is still a budget PC. If you're a bit strapped for cash and looking for a general purpose desktop, this might be the one for you.
The M5630 seems unable to decide if it's an entry level or a multimedia PC -- but might be a good first foray for entry level users who want to do both.
Acer's Aspire Revo 1600 might be the first Nettop we don't actively dislike. We'd rather have an Xbox 360 in the living room, but the Aspire Revo 1600 would be suitable as a PC for young kids or as a low-profile cloud kiosk. Thanks to its $199 price tag, you won't feel too much remorse if it breaks or you outgrow it.
The Acer X1700-U3700A is slightly slower than the competition, but it gives you almost every component you need in either a basic desktop or a light-duty home theater PC. If you prefer functionality to performance, we recommend this model out of the three systems in the current lineup.