I'd say 3 tb fusion, buy a thunderbolt enclosure, and get a 1tb ssd in the future.
Right now 1tb ssds are $600 and dropping fast.
There's two current $600 1tb ssd's on the market and this is the best:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820147251
The other is a corsair m4.
These prices are dropping fast, and a thunderbolt drive would make sure it performs as fast as it does. A fusion drive would make sure your 3 tb performs good.
Right now 1tb ssds are $600 and dropping fast.
There's two current $600 1tb ssd's on the market and this is the best:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820147251
The other is a corsair m4.
These prices are dropping fast, and a thunderbolt drive would make sure it performs as fast as it does. A fusion drive would make sure your 3 tb performs good.