for long range, i've always preferred the halogen bulb style. as you said, led's are great for shorter distances and trails. for the open desert where a more narrow but much longer distance is needed, H4 halogen is what i'd buy. if you have the money, a set of Cibie 9" long range lights would do you well. as for KC, seems like their older lights were of much better quality, imho. if you can find an older, used set of them in great condition for a good price, you can always replace the bulbs easily enough.
1966 CJ5A, mods are coming
1966 Wagoneer, bone stock