I ordered a set of LED high beams and fogs for my Corvette (lows are factory HID) after talking to a few people who really like them. Will have them installed next week and can report on the difference.
I'm certain the Ram will require resistors wired inline to make them work properly. I converted my '13 to full HID and had to install a harness with the resistors, otherwise the lights would work sporadic and I would constantly get a bulb out message. When the BCM "thinks" the bulb is out, it turns off power.
I am planning on converting my '14 to LED once I find some good bulbs, I'm assuming I can use the same harness with resistors.
Btw, the resistors get EXTREMELY HOT! Make sure you mount them to a metal surface away from any wiring or plastic, after being on for just a minute or so while testing, I burned my fingers bad enough to blister when I touched the resistor accidently while trying to put the light housing back in place.