entirely personal preference.
i've used 44, 42 and a much narrower one that came wih the bike. I have liked and disliked all of them at one time or another.
__________________
coasting, few quotes are worthy of him, and of those, even fewer printable in a family forum......quote 3alarmer
No @coasting, you should stay 100% as you are right now, don't change a thing....quote Heathpack