3wheeling on a panhard =
suspension
3wheeling on watts link =
suspension
My summer-driven-sorta-pro-street-truck has a panhard and it works fine; considering the fact that with a 12bolt, heavy wheels and drag radials, the amount of movement in my suspension actually doesn't flip the truck over or twist itself to shreds.
If I built a pro touring truck that actually had to handle like a modern car and/or have like 10" of travel, then watts link. IMO its like the 4-link vs trailing arm discussion....both things sorta do the same thing in sorta the same manner but in a slightly different way.