I'm sure that I have read on another forum some people have had a lot of problems with the APEX kits.? My own personal way of looking at it is - What do all the top Specialist sell?

I would look at TSR, Dubsport or Awesome.
Bilsteins are good, Konis are also.? I've had Koni adjustables and found that they were a gimmick to be honest.? Are you really going to keep stopping and adjusting them for varying road conditions so that you get the optimum performance?, er, no.? Will you be keeping the car umpteen years so that as they degrade in performance you can tweak up the damping, er, probably not.
Boge Turbogas are pretty good and well priced.? Springs, go for Eibach every time.? Konis will sound good in the pub, but you'll pay for them.? Also depends on what outcome you are after, if its handling then I would stick with above.
I'm looking at a 16v Mk3 myself, I will be going the Billys/Boge route with std springs.? The roads round here are so ar$e that lowering it would be insane, plus handling on normal roads is compromised if it's lowered too much + wet weather grip reduced.
Its all a lottery and a compromise.
Long winded I know, I get paid to waffle, hope it helps.