when you say different viewing angles for led's, i'm assuming you mean 1 bulb led's, those are the only one's i know of that have different viewing angles. i wouldn't suggest using those, they're not bright enough. go atleast 4xLED's for enough lighting, or go the high power led route:
http://www.v-leds.com/Exterior....htmli think a lot of people use that one. personally, i have a pair of 4xLED bulbs in there and they're good.