As the title states... I lowered my tahoe 2/4" with bilstein hd shocks and the ride is stiff in the rear... I read some posts saying that the hd's runs smooth and so I decided to give them a try... So now I'm deciding whether to get belltech nitro 2 or the belltech street performance shocks... Which one will last longer and yet give a better ride? Is the street performance shocks just as stiff as the hd's?