The last dyno I used was a Sanyo under-BB unit in the early 80's.

Am currently a fan of LED headlights due to low cost, light weight, long battery life and lighting adequate for my suburban/urban needs.
I like the fact that I can have Cateye mounts on all my bikes and move the lights around on them as needed/desired. For commuting, the use of two headlights makes the odds of a blackout unlikely.
Fully understand the appeal of hub dyno setups, though.