I have the 1TB and like it. I have the USB adapter for my air and if I need to use it with my mini I have the FW 800 adapter.One thing to consider is that if you get a GoFlex drive from Seagate you can upgrade the connector later. If one day Thunderbolt becomes affordable.
I use the USB 2 version of this drive with my Air.
http://www.amazon.com/Seagate-FreeA...44524973&sr=8-5&keywords=seagate+goflex+500GB
The Thunderbolt adapter, while "inexpensive" compared to other TBolt solutions is still too high in my opinion (about $150 just for the adapter and tbolt cable). Probably not worth it for a spinning drive which won't see the speed benefit.
Michael
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