Good point. Yea I like the RC390, its my favorate KTM, but its so close to my CB500 in style and I dont need the hp or the more intense upkeep from one. Sometimes I get a little crazy with the CB as it is nimble and forgiving but when you roll it on, it jumps.
An RC390, It may not be happy with slow rides through windy roads that I do as they tend to run hot and want to rev. I did a good looking at them before I went to the CB. One thing that sucks for me is that Im short and KTMs are tall bikes. Too tall for me to stand at a stoplight comfortably. The pricepoint was even less than the CB.
The TU would kind of round out my collection and be happy snailing along the backroads.