I was just introduced to the H11 as the low beam on my sierra takes one. $24/bulb and 1 hour's labor to replace (have to move the 2nd battery.
Conveniently for me it was covered by warranty, and they were late in delivering, so I got a free 12L oil change on my truck too.
Interestingly, according to the hour meter on my truck, the light burned out at 1530.5 hours. I know that because it's on all the time due to DRL's.