BTDT. Tried just about every windshield combination available for the LT, and still have several of them gathering dust in the garage.
The bottom line is that while several options worked better for me, the Cee Bailey windscreen is the only option where my wife noticed a marked improvement. Also, I've had other LT friends ride my bike and comment on how it's the smoothest, cleanest air on any bike they've ever ridden.
A lot does depend on your relative heights, so the best option is to try several options and decide what works best for you. But that can get expensive quickly, unless you have a variety of LT friends nearby willing to swap bikes.
I'm 6' and my wife is 5' 8". The stock (tall) BMW windscreen was OK for me solo, but she noticed helmet buffeting at highway speeds. At anything over about 60 mph, she needed the windshield full up, and would notice immediately if it wasn't. But that meant I was always looking through the windshield, which wasn't good in the rain or sunset glare. So I cut the Euro-profile into the top of the stock screen. That meant I could look over it easier, but still wasn't great for either of us.
We tried a Laminar Lip and again I noticed a large improvement while she only got a slight improvement. But I hated looking at the rubber bumpers and velcro patches, and the Lip tended to deform and slip at higher speeds. I think these work much better on smaller bikes where they can be bolted to the windshield using the factory screws.
We then tried an Aeroflow windshield. It was much better with managing wind flow, but the severe curves generated way too much distortion, even with the screen set much lower than normal. I took it of after a couple of rides and less than 100 miles because of the severe distortion.
The Cee Bailey #2 windshield is also slightly curved to manage air flow, but not nearly as severe as the Aeroflow. When riding solo it can be left lower but pushes the air higher over my head. My wife still prefers it full up at freeway speeds, but I can just see over it and she's much happier. We've put tens of thousands of miles on this screen and are still happy with it. In fact, the only thing that convinced me to change the CB #2 windscreen was when they came out with the wings version, which we've also put many tens of thousands of miles on.
The only real trick with Cee Bailey is to decide how tall you want it. They base their measurements on the stock (tall) BMW screen. I'm using a CB #2 -2" screen, which because of the built-in flip ends up about the same as the stock screen full up. Some guys prefer shorter shields and are quite happy with the #2 -4" version.
Again, your best option is to find someone locally who has on and try it out, or maybe buy one used to save a few bucks, then sell it again if you don't like it (like I did with the Aeroflow).
Note that every bike is different. I hated the Cee Bailey on my '07 GT, and love the Aeroflow. But again, I have a garage full of slightly used windshields for this bike as well.