Sounds like I might be one of the only guys who has tried all three: Van's chains, Rocket Link, and Tail Lynx. Here's my take...
Van's chains - These are a non-starter: they rattle, rust, and just plain look bad. They work ok but the fittings tend to wear the holes in the rudder horn and tw bar. With two other options why would anyone be using these?
The Rocket Link - I'll assume it works similarly to the Silver Bullet. I got one of these when they first came out. It was ok, but as others have pointed out it is more sensitive and some might miss the freeplay between the rudder and the tw that is eliminated with this design. Also, at least with the Rocket Link, it was possible to get the arm spun around crossways if you jockeyed the plane a certain way on the ground. Having had this happen once I trained myself to always LOOK at the tw before getting in to start up.
Tail Lynx - This is the pick of the litter as far as I'm concerned. The recommended 3/8" of play the instructions is just right, and the "feel" is excellent. They can't get twisted around backward, they don't rattle at all like the chains, there is virtually no chance of them failing in any way as the single-sided flavors have been known to do, and they are very nice looking.
FWIW,