i'm pretty sure the Cruven version sucks. i have 'em right now.
there is almost no damping whatsoever. it's like you're on (shaky) stilts. kung laspag na shocks mo, a Cruven job will bring up your ride height again para di sumasayad yung ilalim mo sa humps. but, as there's almost no damping, it's a shaky ride (para kang nasa duyan......)
but i'm not complaining, because it's 600 pesos per shock.
Go with the KYB's... Per my experience, the refills get soft over time and you may end up with inconsistent damping rates on different sides of the car.