Which mini laptop is better? Acer Aspire One Black 10.1 or Samsung - Netbook / Intel� Atom?

There probably isn't much difference, however, i strongly encourage you to get your hands on both of them, and make sure that from an ergonomic and general use aspect, they are suitable. I bought a netbook and after 3 months, stopped using it and bought a laptop. Netbooks are fine for surfing but i had a really hard time seeing the screen and the keyboard was a pain. I'd also check out small laptop, like the 13 inch ones and see if one of those would work for you.