External HD: Mobile or Desktop?

myversa

Which one would you buy?

WD 1tb External $299.99
WD 500GB External $149.99
WD Passport 250GB External $139.99

For the price I would buy 500GB but myBook looks kind of big comparing to Passport...

myversa

You have bad experience with WD?

myversa

I have used WD, Maxtor and Seagate.  My 2 Maxtor internal 80g drives died while my WD internal hard drives still work great.  That's why I like WD.

I cannot decide if I want to buy a mobile drive or desktop drive.  Desktop drives look much bigger than the mobile one but the size is double at the same price.