I started out focused on getting the FZ-09, I went to check it out and was impressed by its simplicity and weight balance. However at my dealer they have a 2007 SD 990 and I'd never seen one before, it struck a chord with me. Now I'm torn between the 2 bikes. What I want is a daily commuter bike that isn't gutless and performs well. I also hope to enjoy it some on weekends. I'm 43 and won't be doing wheelies in traffic or any other tricks for that matter, but performance is important. I grew up riding motocross bikes and prefer light and nimble machines with good power but don't care for riding position of a sport/GP style bike. In 2001 I got my first street bike, an HD Sportster 383 Hugger, it was okay, not to heavy but LOW on power and VERY uncomfortable on any trip over 20 mins or on the interstate. So I sold it after less than a year and thought that'd be my last street bike. Then I noticed the street fighter/naked bike movement and that got my attention but I was waiting for something to inspire me. The FZ looked exactly like what I wanted, but then came the SD 990 and now I'm torn. Any input, experiences or comparisons are welcome. On paper they seem similar, weight, height HP, but I here the Mpg is less on the SD and the upkeep is higher. Lay it out for me, which should I choose?