If it comes to keyboards, nothing can top Lenovo (formerly IBM, but the people who work there are still the same).
Take a look at the X220, it has the classical Keyboard which is a dream to type on, it also has a 12,5" IPS screen which is bigger than netbooks but smaller than normal 14" or 15" notebooks, so it's still very portable.
At only 1,4Kg with 6c battery, it won't weigh you down either. It has 3 USB Ports, fulfills military standards (VERY durable!), lasts 6h with 6c battery and 9h with the optional 9c and sports a full voltage core i processor (i3, i5 and i7), so multitasking is no problem.