I need some 2TB External HD's .... Any recommendations?
 

Or just buy plain old desktop barebone drives and use a enclosure?

heres one.

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Buy firewire enclosure or E-sata
http://www.usb-ware.com/venus-hardware-raid-arrays.htm
Add 4 x 1tb disks, and set it up as Raid 1+0.

+

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If you want cheap cheap then try Buffalo

Notice I used word cheap not inexpensive :)

What do 2TB go nowadays? just get two 1TB drives bet its a lot cheaper

If you see yourself needing to upgrade a lot due to downloading a ton of shit all the time, setup a "server" for yourself. Get a cheap desktop, fill it with large hard drives(quality ones, Western Digital) and connect it to your home network. BAM. It will save you money and trouble in the long run.

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If you do buy a 2TB external make sure it's a single 2TB drive, and not 2 x 1TB in RAID0/JBOD format. If either of the drives dies in that setup, you lose all your data.

+1 for a NAS. If you have the $ have a look at Drobo, they use a virtual drive system which allows you to grow your storage by replacing drives as cheaper/larger ones become available. No need to reformat or do anything special, just pull the old drive and replace it with a new one.

If you're into DIY then look up FreeNAS