I also have a 2006 Suzuki Boulevard M50.
I've been wearing an HJC Animus for a few years, but just got a Bell Qualifier - Legion for Christmas that matches my bike pretty good. I liked the Legion bc of its fighter plane styling, and it just so happens to match my Triumph, so I win:p
I also...
Oh yeah, Diavels are super sweet. The main reason I didn't go with Ducati in general was the maintenance and how far away I am from a licensed Ducati dealer/mechanic. The Monster is what got me into the naked bikes in the first place.