I'm trying to decide which types of drives to buy. I can buy 32Gb SD Cards for approx £30, I can buy traditional 2.5" drives for peanuts, or I can buy SSD drives (typically 128Gb for £120). My situation is that I am traveling and need easy to manage stuff, I need to go through security Xray machines and on airplanes and also live in temporary apartments whilst on the move. Which is the best way of keeping my data available and directly accessible to the laptop? I don't want to carry a load of CD/DVD's either.