define best though?
Most cheap coilover kits end up far too harsh, because they're designed for people to slam the car into the floor, which then requires a high spring rate to stop it bottoming out.
On the flipside, spending 5-600quid on a properly matched shock/spring kit, will return a car that drives as smoothly as it did from the factory, but that stiffens up nicely thru the twisties giving you more confidence to push on without smashing your spine to pieces.
Fitting lowering springs might well give the shocks a harder time, but the fact that your car had a set of completely knackered shocks says more about the idiot that owned it before you, than the lowering springs.... I've owned a few cars in the past that have been lowered on standard shocks, and the shocks didnt explode or fail in the way you've described, and if they had, i'd have noticed, and changed them! Sure the car did handle much better when i finally swapped them out for proper shocks though.