It is hard to take advice from people who have tried only one spring kit. I myself like something a bit firmer and love the H&Rs. But then again someone who has not fitted springs or coilovers to a car before will perhaps complain they are to firm. Ask someone that has tried a handful of brands. I cannot say much for the Golf R but on past cars I have ran Bilstein, BC Racing, HSD, Vogtland, H&R, Eibach, PI, Apex, FK, Cobra and Raceland in mostly coilover form but some spring kits.
I had eibach in my MK5 GTI the sportline kit and it was crashy. HSD coilovers in an E46 M3 (awful), Vogtland coilovers in an E46 M3 are amazing. H&R E46 M3 springs firm for C roads but on A & B roads they really improved the car. This is just my opinion of people on the forums and then they become biased towards the brand they selected.