mixed

Ive looked on this forum , did search and im all mixte up now i find the bike to tall geared (its a 2014 pani s the matte black ( the fastess ) ) i want to go 14/41 1- do i have to update the ecu? 2- the 520 is it worth it for ONLY street? 3-dont want quick change 4-is stock chain...

Basically BMW still king on track and road. I know its only one review but a similar story keeps cropping up. Its questioning my purchase, what with being a bit pissed off with delivery time and it being £25k towards my 991 when i already have the S1000rr I'm wondering wether i need this...