Headlight upgrade: Xenon or LED?

[WTArmstrong]

So I'm in a LITTLE bit of an odd spot:

Picked up a "new to me" x5 recently (2001). Car had been in a low-speed front-end collision, bumper, grill and headlights (xenon) were replaced with halogens from a doner X5. All working perfectly fine, but I'd like to upgrade. I DO have the passenger-size Xenon sitting in the garage, so I have two choices:

Buy driver's side Xenon, or replace both sides with LED bulbs in the current halogen housings.

Thoughts? I've upgraded headlights on one of my other (non BMW) cars to LED and was quite happy, but those were sealed units, not just swapping bulbs. Priorities are a) not blinding other drivers b) good, white output. Not overly concerned with angel eyes or anything else. I've driven an x5 with Xenons and was happy with the light output, but I know I potentially could do this easier and cheaper with LED's. Thoughts?