I'm 6'1 with a 34" inseam. I sit tall on the bike so here's my "take" on windscreens so far;
1. Stock Windscreen - Hated it...might as well ride without it!
2. VStream - Loved it! Loved the look, it's solid, least amount of drag from a windscreen, but as my seating position changed to a more "upright" position the windscreen became too noisy for my liking.
3. Aeroflow - I like the coverage and the quietness of the Aeroflow BUT it moves ALL OVER the place (I can best describe it as "flopping around" on the mounts) while riding and I don't like that at all! Plus, too much backpressure when the windscreen was raised all the way into the "up" position.
4. CalSci - Bought the CalSci XL Standard and rode with it. It was "okay" but it was too narrow and didn't look right to me and was a little on the noisy side. I switched it out for the CalSci XL Wide and that's what I am currently riding with. It is very close to the Aeroflow in how it protects, handles wind noise very well and it's solid like the VStream (doesn't flop around while riding like the Aeroflow did). Also, the CalSci windscreens have "vents" cut into them eliminating backpressure...nice feature!
So, for me it's the CalSci XL Wide. It's a nice windscreen and the customer service for the windscreen is great!
That's my "2 cents worth"!