I'm in dire need of opinions toward replacing the 7" round headlights. I've read numerous times in other forums that E-Codes are the way to go. However, I've also read that this sometimes requires to buy a new wiring harness for the headlights, especially if the bulbs are at higher wattage. And these harnesses are pretty damn expensive for just being wires...

I was thinking of buying E-Code lenses, then converting to HID ballasts. Any thoughts on this? I think that HIDs use the same (if not less) amount of wattage, and come with wiring kits. Would this be a feasible idea? (And also allow me to skip on buying the new harness?)
As for my other bulbs (like turn signal, brake, etc.), I am thinking of updating to LED. This wasn't an option for my 944 a few years back due to LED bulb design (bulbs were too wide and bulky without modding my taillights). But now, new LED bulbs are slimmer and brighter, giving me a TON of options.
Any thoughts?