I am going to suggest you don't do 1TB. For a third more in price you can double the storage. WD and Seagate both have 2TB drives under $100 bucks.
The reason you should consider 2TB is simple - 1TB is good for what you need today. What about a year from now? 3Yrs?
With storage purchases, always look at the needs of "tomorrow" vs the needs of "today". The money you save in the long run is well worth the $35 dollars today.
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Good Hunting!
Captain Haplo
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