I had H&R coilovers on my E93 and they were fantastic. Rode well, and performed well. They were not a track oriented damper but they did fine on the track, no issues.
Bilstein shocks tend to be very high quality. they have had some serious mistakes, they're definitely not perfect. The e46 M3 kit sucked.
I have run 3 sets of PSS9s on my various s2000s, 2 of them custom valved. (it's seriously cheap, like $80 a shock to get them revalved at bilstein) I ran PSS9s on my 335i, H&R coilovers on my E36 M3, and PSS9s on my E46 M3. The PSS9s on the M3 sucked, they were too soft and bottomed out. The other setups were fantastic.
I have over 80k miles on 5 s2000s with every suspension imaginable, from Moton to JRZ and Penske, along with cheap crap, the BorChann and Megan racing stuff. H&R is *not* crap.