Honestly the TS 1000 would be perfect for a 2x2. It's a little more but itll do the job. I'm not knocking the 300w unit LED as I use it myself for veg only.That's where I'm leaning at the moment. It says the 600 is only rated to 1.5x1.5 for flower, but the efficiency makes me think that it would beat out the 300W.
Definitely you will love the light.Thank you everyone for the input. I will be waiting and picking up the 1000.
My initial idea was to use the 300W because of a few grows I found that pulled 4oz. Which is about what I am looking for.and then thought the TS600 would be more efficient. But, the 1000 would probably make that goal a lot easier.