Thanks for the replies guys. I'm not looking to buy anymore but if I were I'd keep a look out for a + model and swap out my old normal one with wifi instead.
I'm along the same thinking about the personality side of things. Each one is different. But it still doesn't explain why though? Was it down to components used? Programming?
Cheers.
components and component quality
in mining with gpu's
in intel cpus
some clock great some don't
when chips are made they are not equal.
sometimes in gaming gpus you will read that the chips where binned.
Simply put tested and sorted by quality.
I think the s-3+ varied due to chip quality.
There are rare s-3++ machines that where most likely made with binned high quality asics. These were sold mostly in asia.