remember the N52 is a under-rated and detuned version of BMW's legendary naturally aspirated inline 6.
If the cost saving and additional efficiency from the new N20 is satisfactory to some people, then good for everyone. However, for me, the naturally aspirated inline 6 is still my choice.
However, if BMW would sell the 320d then I would be the first one to sign up. That's real torque and efficiency over the inline 6.
On a side note regarding the Pentastar. I love that engine. I just wish it was paired with a better transmission. I've been looking hard for a Jeep for snowboarding trips and the Pentastar is looking good in my book.