My take is that they are similar to cheap coil overs;
Will they work? Yes.
Will they fail in a month? Probably no.
Will they fail in a year? Depends on how many miles you drive.
Will they last as long as an OEM shock? Probably no.
Can I drive canyons with them? Yes.
Are they better than stock? Hard to say but probably better than your old shocks but not as good as a new OEM shock.
Are they better than PSS9's? Definitely no.
Are they better than my worn/blown OEM shocks? Yes.
Will they be good on the track? Probably no.
BMW Reviews:
Stagg Shock/Strut Reviews?
Honda Reviews:
Ever heard of STAGG SHS shocks? Pretty cheap, but not sure of reliability. - Honda-Tech