Which one should I get the 2TB Desktop or the 1TB Portable? For the Portable, I would need a filler. Whoever can give me an honest answer, I will send them a $25 off 75 coupon... I have 2, one for me and one to give away...
On the other hand, if you have a relatively modern wireless router, you should be able to connect either external hard drive to the wireless router. The process creates a network attached storage system (NAS), allowing you to access the external hard drive wherever you are as long as you have access to the wireless network, making mobility more or less irrelevant.