I should probably post in here with my +6 experience too.
Had the CalSci +5.5 and wasn't really happy with it. It worked, but, it was ugly, and I had to cover the vent hole near the bottom of the screen. I got lucky and the dealer scratched it up. So they offered to pay for a new screen and didn't care if I tried another one. So, got the CB +6 in clear.
Bottom line is I love it. I have ridden with it for a few hundred miles and I have come to like the middle setting the best. Puts the screen about nose level. Puts the airflow just over the top of the helmet. If I put it up to position 4 then I look through the top of the screen (the screen is at eyebrow level). At the lowest position the airflow hits my chin.
The width is also nice. Keeps most of the airflow off the shoulders. Also, in cross winds it is a little better.
So, for anyone who wants complete airflow coverage the +6 is good. And it looks pretty good for a big barn door of a windshield.
Wayne, don't know about the first gen screens but this one has a large curve in it and then the flip.
FYI, I am 5-10 with 32 inseam. I also have a Russell seat (adds about 1" of height).