LEDs all the way for me,my truck is my daily,and add to the fact folks in the UK don't 'get' red turn signals etc.
To that end I used amber LED bed roll turn signals and complete LED inserts in my tail-lights,I also put a third brake light in the rear window for added safety.
I much rather give up a little originality in pursuit of a safer drive.

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.