I'm a big fan as well. Mine here in zone 5a dies back to the ground every year, but always bounces back well, producing flush after flush of absolutely glowing, deep, garnet red blooms. The color is truly arresting. Never noticed much in the way of disease, or sadly, scent.

Harm Saville is a an excellent red mini. It handles the extremes of z.5 Indiana weather quite well & has a nice scent to boot! My beef is that this rose opens very quickly. If it's in bud early in the morning, it's fully open by noon or so in hot weather. I enjoy this rose enough to put up with its quirks.