denso iridium of coz' damn shiok lah ! =Þ Better for cold starts... lasts longer than normal plugs... fires better. Some say fuel consumption better (make up your own opinion on that one).
And who said adjustables are not comfortable? Just revalve the settings and change the springs to your confort level loh... =Þ
Adjustables are for those who want more 'flexibility' in suspensions. With adjustable height suspensions, you can set to your desired height... and if u have hard/soft adjustable, u can put it on hard when u going up genting... and put it back to soft for city driving lah. =Þ If u don't get adjustables, you'll have to live with just that 1 setting.