Last summer I bought a sidecar rig with an R100R tug and Velorex 700 chair. (See, I'm even learning the lingo

)
Anyway, it had the stock telescopic forks. It was fun, but even with wide bars it was a lot of work to turn, particularly left turns when accelerations. A friend had a leading link front suspension and decided to sell it so I bought it and we put it on today.
Holy Cow!

It's like having power steering. I can't believe how easily it turns. And there's no brake dive. The front end actually lifts a but under braking.
Anyway, if you have a sidecar rig and are thinking about switching to a leading link, Go For It! You won't be sorry. The difference is like night and day.
-hank