Those LED units look extremely dodgy. If you absolutely need to go for them, get the ones with CREE drivers. Their colour temps start only from 5000K, with 6000K being the norm, and the while they look cool, they have absolutely crappy light output. Temps between 4000K-5000K are what you should be looking at. I fitted my old van with 35W 4300K xenons, and it was difficult to tell them apart from Osram Nighbreaker Plus's, since they're almost 4000K.