I can't say for sure that Snowforce are the best out there (not the expert)but compared others that I have seen. the other companies LED's are crap. These are very bright, small, very low profile and like I said life time warranty. But they are probably more expensive.
Mine was easy. the I put the ground on one of the handle bars mounting bolt, the positive was wired into the heated visor plug that was all ready there. the kit comes with 6 lights. 2 I placed at the back of the sled just past the side heat exchanges with the wires routed though the running board's edge (the rounded edge) two I placed just slightly behind the front of the heat exchange wires routed into the cowling and last 2 on the front shock wells (side towards the back of sled) these location were pick because they offered the best protection, if something was to hit them it would have to take the heat exchanges first and if that happened, the light are the least of you worries. I wrapped all the wires with tape and drilled the wire holes oversized with rubber grommets. The hardest part was fig out where to put them, the rest was just time. I can take pics when I get a chance, if you want.