My 2 cents.
I use RO lump because it is available locally to me. It's ok but not my favorite.
IMO Wicked Good burns the cleanest and lasts the longest, but not much "smoke flavor."
Good One - better than RO, decent burn time and decent smoke.
My favorite = B&B oak lump. Good burn time and by far the best smoke taste IMHO.
Bomber-"the mistress" from Backyard Bombers BBQ