I've got the Weitec 40mm Ultra GT kit waiting to be fitted next week, so can't yet comment on it personally, but I chose it based on a load of reviews I read on various different sites. I spoke to Damian at DPM Performance and he advised it's one of their best selling kits for the Mk4 - really helpful bloke actually, so might be worth getting in touch. I'm sure the 50mm would be the same, but the comfort is going to be slightly compromised by the further drop.