H4 Hid 50
I fitted a Les whatshisname H4 HiD 50 kit to the standard reflector unit, as you have.
The main beam pattern is a bit odd, though it works well enough, and dip is really good. I do reckon it was well worth fitting.
I find a good dip beam matters more than a good main, as it needs to compete with other vehicle lights while travelling at the same speed that you use a main beam.
One thing does make me uneasy tho: with a twin headlight setup there is always a spare bulb in place should the other bulb/circuit fail suddenly, with a H4 bulb there is a spare element in the bulb. With the H4 setup there is no fallback; if the fuse goes at ninety then there will be a funny little pucker mark in my seat.
For this reason and this reason only I might fit projector lights wired into the main beam circuit, so I dont buy lots of light units and Hid kits and potentiallly worsen my dip beam pattern.