I've no info on the weight either, and my Google searches have been mostly "miss" and "wrong hit".
I've got the dealer-supplied IPFs on mine. I'm actually quite happy with them. I have a flood for wider, nearby illumination and a spot for distance. Since I can now see most everything around the front of the vehicle and so far into the distance that I can easily react to whatever I see, I have no need to change from these.
I had been reading how IPFs were rubbish and that Hella, Cibie, Narva and Lightforce were better - but in my mind, if I've got enough light to see for my driving style, why do I also want to incorporate enough light to cook with? Cibie-toasted skippy isn't my idea of "fast food"!