Avoid green edition for the time being as they have failure rates- as do mine. I insisted on atleast blue edition so they replaced mine with blue.
Besides, IIRC the price difference between green and black is somewhat negligible. Confirm the price for blue (I don't think its on stock but I don't about now) and black, make the decisions accordingly. Rather than green, I would recommend 7200.12 rpm drives.
But generally, I doubted. I am using an older version of the green drives as a primary OS and it doesn't show any lag.