Without knowing your riding style, I would suggest a good set of sport touring tyres, like Michelin Road 5 or 6.
I had also good experiences before with T30 from Bridgestone, so I assume the current generation T32 will be even better.
For what we can (or should) do on the road on a Fazer, these should be more than enough.
A more sport oriented tyre could give more grip at certain limit situations, but in my opinion, if you are ever losing grip on the street, it will be most likely due to road conditions, and much less becuase of any differences in the tyres being sport vs sport touring.
Another factor to consider is wear, but not just as maximum mileage.
I find the Fazer very sensitive to front uneven wear, and front tyre tend to wear more on the sides, resullting in a more triangular profile.
This makes streering very hard. To stay leaned in a corner, we need to apply more counter steering. It is uncomfortable to ride, and makes me lose trust in the front.
With sport tyres this will start to happen much earlier, and at that point I prefer just to throw them, and put on a new pair, even if there was still a lot of mileage left on the tyres.