Thanks guys, still weighing up which route I'll take, both have pros and cons, the HID more cons but yeah, just sitting on the fence for now.
In terms of reverse bulbs, I'm looking into these badboys (link below). They are Putco 3157 bulbs (same as the factory 3057 bulb fitting) and 360 LEDs, they seem like a plug and play, surely there is no need to wire these bulbs in like the front HID style lights with ballast etc? They have the same fitting so I assume they simply just "clip" in like the OEM bulbs, right? The also don't mention anything about other required items in the blurbs I've seen. Just triple checking is all. Pricey ($60) but they look very worth it, they look like they are 2 times the power of the OEMs.
The other option for $15 each are the 2 different ones below the first image, which at this stage of those 2, I like the top image as on paper the light is shining out which make sense for reversing, unless the actual light housing helps increase light? Opinions? Input?
http://cgi.ebay.com/Putco-LED-3157-white-360-bulbs_W0QQitemZ140356960554QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20aded412a