R9T upright riding position? WTF I can say an Asian guy won't think R9T is a upright riding bike.
What is this guy's height and weight?
Diavel sure is a high tech cruiser that provide way many feature than R9T. Its price states that it is too higher than R9T's. I can't really talk about how is the ride for Diavel because I didn't ride one.
R9T on the other hand is more of a customized bike that can allow you to tweak it into the bike you want. (more freedom to mod) You can make it cafe style, retro style, even cruiser style or any other style you want. R9T is not a perfect bike, but you can complete it with your heart telling you to.
Why don't you go to dealer and test drive them both?