In a vertical? Minion burn, easy clean up, large fuel capacity, and less babysitting.
In an offset? Nothing, blocks air flow and can choke down temps. Offsets are like Nascar, its all about the draft. Putting a basket in an offset is like running a stock car with a clogged air filter.
18.5" OTS, 22.5" OTG, CB Silver(Rip), Vintage Coleman Bullet, Pit Barrel, UDS