Sideface:dclegg: I've ordered the Transcend 2TB USB 3.0 model...
You already have 500GB.
You think you will need 1 TB max.
Therefore you will really need 2 TB.
I actually stumbled across this Porsche Design 1TB model, after I had ordered. This is probably a good thing, as I'm a Porsche junkie since ages ago, and would've been tempted by it. :-)