A laptop and a notebook are the same thing.
A netbook, however, is typically a smaller, lightweight unit that has a very low power draw that is designed primarily to access online apps & functionality.
As far as recommendations, all the suggestions you'd get here would be within the framework of a vehicle installation, as that's the focus of these forums.
You might consider two things:
1 - Looking at websites that review hardware to get opinions and/or suggestions.
2 - Going to a retailer and getting some hands-on time with models that interest you.