Advice: 650i flash tune? MP vs PTF BM3 or other?

[siliconvalleyf06]

Hi all, I just bought a 2016 650i GC and have been reading the forums about flash tunes, and the two that seem to really stick out (to me at least) are by Mission Performance and Pro Tuning Freaks BM3. I would love some guidance from folks who were swayed in one direction vs the other. These two seem to be the most complete and properly researched flash tunes with some very impressive performance numbers.

Also, I am considering ER catless down pipes and maybe n63intake.com for the car.

Really appreciate the feedback on one direction bs the other.