I've cooked on a Good-One...they are nice, but over priced. Chris is a hell of a guy though. Use his lump all the time.
If you are going the pellet pooper and want the best, go with a Fast Eddy...that will give you plenty of space.
Yeah, burnt ends off a Wagyu isn't a good idea...too much delicious fat. I usually buy cases at a time from Sam's (Certified Angus). Piss...have you been to RD? Haven't been there myself, but heard it is pretty nice.