H&R or Eibach are it if your only going with springs. Personally I'd go with the H&R out of the 2. Cost about £190 so Not loads more than those Apex ones. Double that once you've had them fitted and a full 4 wheel alignment though.
My brother is selling a set of Eibach Lowering springs on standard suspension and top mounts if your interested... Have a look http://www.mk5golfgti.co.uk/forum/index.php/topic,69415.0.html