Green vs Red redux.

So, I see WD have released their new 5TB and 6TB Green drives. I'm still convinced these drives are the same mechanically as the Reds, and a few minutes with WDIDLE3.exe turns off/down the idle timer. In a pair in RAID1 I don't see any reason why I should spend £20-25 extra on the Red.

I've had decent performance and reliability from the Greens, basically as good as the Reds (both perfect).

Anyone else feel the same way?