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A few sd cards + iPad (w/ sd card reader) = no need to travel with a laptop
As far as performance, they are all pretty much the same as they are built around the same small group of processors. I have an older Lenovo S10 with a 1.6Ghz Atom and it has no difficulty running Lightroom at an acceptable level. (Single photo work is fine, don't try batch processing) Running Window 7 premium 32bit with no issues. Easily fast enough to playback videos and do minor photo editing and viewing.What netbook did you get? Are you happy with the performance?