timbo;c-137925 wroteLed conversions are made to be compatible with the stock halogen reflectors so they actually maintain the stock headlight beam as opposed to shitty h.i.d kits. I have fitted a bunch of the H4 led kits to older vehicles like 240 Volvo's, Datsuns and vw beetles. They are a massive improvement.
Phillips plus series halogens have a terrible lifespan compared to standard globes.
I see the Phillips lifespan specs aren't great but the output is very good. Quite noticeable.
My experience with factory HID is that its lifespan and value are also questionable. More so!
I've seen some HID and LED aftermarket rubbish about and its obvious a lot of its been fitted. Its dangerous when affecting low beam pattern and should be ripped out on sight.
The good LED stuff is now on par for light output and worth a try. Seriously though don't mess about with cheap stuff in low beam applications.