As Brad says. The oem stuff is okay, better when its set up properly for you. Worth getting someone to do it for you if youre not that way inclined. I had mine set up by a racer and it went from a juddery stiff ride to a more compliant and comfortable ride for only £60. All i need to do now is one click on rebound for a track day, and then lose that one click for the road and the bike is fine. Easily the best £60 ive spend on the 1198.
I'm not far from MCT, so I'll take it along there once I'm familiar enough with the bike to tell the difference.
Best tweak you can make is to yourself, track tuition is the best money you can spend, no suspension mods will knock the seconds off a lap that improved ability will