I used the droop, droop is very essential to me coz it's also protecting my shock absorber so my shocks wouldn't extend to the fullest. becoz if it does it would blow my shock caps or make it lose thread specially if you have stiffer springs. Good thing you remind me, i checked my droops screw and they're all gone!!! lol. i got to replace them right away. good thing it didn't break my caps.

If you want to add just a little stiffness i use the spacers, if you want a greater spring rate ( if the big spacers is not advisable coz they tend to destroy the elasticity(not sure if that's the correct term for it) of the spring , you replace it with a whole hard spring , but your buggy becomes very bouncy and easily rollover. But with a combination of medium and hard or soft and hard, and so on and so forth (depends on your setup), you get a stiff stance plus a good damping performance. just please try it and you'll see the difference. But when you try , try it carefully. you got to have the right lenght for the auxillary spring ( the one above).