Lightforce 170 permanent roof mount without a doubt,I had a hella on old daihatsu and it does have more up and down adjustment but not a patch beam wise and I tried souping up the hella with different bulbs but doesnt come close to the 170,as its nearly all hill ground from land rover i,m looking up most of time so have lightforce adjusted externally to point higher so you can hit higher up hills but still able to look well below as well-take the plunge and drill the roof its so much easier than fannying about with cables inside a cab getting caught on things and if your solo and have to get out to shoot you can have rifle on bonnet and still reach into cab to adjust light