what sparks are you guys running nowadays?

U're sain in this thread that stock has 044 gap, but the gap for stock ifr6d10 is 1mm, or 0.039inch, and the gap for bkr7ex-11(6988) which you consider as a proper change for 6-s is 0.43-1.1mm. That is bigger than the stock ones. I understand that heat range is higher, against stock ones but the gap is important too. wouldn't it be better to run bkr7ex-IX (2667) that has gap 0.31 and 7 heat range? have anyone of you tried these ones?