FYI I have at least 10 different bars hanging in the basement.
It took a while to find what worked for me, so I bought things used, at swap meets, here on BF. Now I have want I like, but it took a while to find out. I tried 44 and 42, for me 42 works the best, but I gotta tell you, I could ride and be happy with a 44 in the bar that I like, so, I'd say look around and realize that it takes a few rides to really know what works for you.
dave