I'm running ProComp ES9000's and they are not even close to rough. I'm thinking it is your stiff ass springs giving you the problem.
Agreed, My dads 95 4Runner runs ProComp ES9000s and it rides really nice.
Its that 4in off the shelf lift kit thats making it ride like a tank, those kits arent made to be flexy, trail friendly really or to ride like a caddy.
they are mearly to clear larger tires... for that
status.
I say SAS,
take that stage II out and do a custom lift with... BJ spacers, Cranked torsions and a 3in marlin pack for the back.
you wont get a nice ride out of that IFS lift from procomp.... IMO that is