I have consulted arb and other shock dealers abroad, conclusion was their springs are harder than stock springs so no ride improvements.
Arb has adjustable shocks as well but price difference between them and kings is less..
Secondly almost everyone says kings Suspension setting gives cloud like feel.
I have done extensive research in past few months and made up mind for kings.
Lastly this is also a fact that it still won't be as comfortable as a prado, I don't have idea of 2006-08 models but 2011 and above are pretty comfortable.
I don't find the revo uncomfortable being bouncy is its drive dynamic and it's fun to live with vehicle