Windshield's are a very subjective topic.... All I can say without a doubt is that I have a Z screen and bar back's and I didn't have to change the brake line....
I don't have the same kind of bar backs as the members that had to replace the line so I can't comment on that.
I'm 5'11" and doubt that you would be looking through the screen. I have a BMW "touring screen" and while I think it looks nice, and I did like it, it doesn't offer enough protection for me. The wind hits me in the chin, and some of my chest and shoulders. For the amount of miles I ride in every kind of weather year round, it just doesn't cut it for me. YRMV.
The good thing about the Z screen verses the BMW is the price. It's less than half the price, so if you try it and don't like it would hurt much less....
Picking out a screen is like buying gloves without ever trying them on, you can read all you want about it, but everyone's different and you just won't know until you try...
Today it was finally just above freezing and sunny in Chicago, and I went for a 4 hour ride. I was glad I had the Z screen on....
Welcome and Good Luck!
BTW if anyone wants to buy my BMW touring screen send me a PM.
