Nothing beats the look of a Legacy steamer pulling a long train up a grade with the brake level set near full on and the throttle full open. Amazing labored chuff sound with full smoke plumes.
The diesels I keep on low smoke setting. The steamers have to be putting out a good bit of smoke at slower speeds for my personal preference to be happy.
I use a large variety of JT smoke flavors. The new blueberry scent is incredible.