UDS fuel...

KBB all the way at my house. I have not had good luck with lump because all I can get here is cowboy and it just sucks. I have a huge pile of maple outside that needs to be made into charcoal though. Note to self to get that done.

To be honest I tend to use whatever is on sale at the time. I like to keep a small stock of charcoal for my own prepper reasons but cycle it out as I do smokes. I usually use Kingsford briquettes and do a 70/30 mix with Royal Oak lump. I also supplement with chunks of various types of wood for additional smoke when needed. Most of the time the charcoal alone will provide the smoke I need for most things.