Torsion bars for better handling; your experience?

You are better of with a mono tube shock.

Which models are those? I want double-adjustable shocks so I can buy one set and use them forever even if my suspension setup changes which it definitely will. I don't like the idea of non-adjustable shocks where you have to match the spring rates, vehicle weight, tire grip etc. to the damping rates or else you're losing performance... (????)