Right now I have a 06 Yamaha roadstar midnight silverado and a Ninja. My Yamaha's a big bike with lots of chrome. I'm looking to sell her and for my next purchase, I want something that doesn't take so much to maintain. My bikes are my main mode of transportation, actually my only mode since I live in So Cal and can ride all year round, but I want something that won't take me hours every week to keep clean, polishing chrome and such. Also looking for a bike that doesn't cost so much to replace tires. It costs me about 500 dollars to replace my Yamaha tires. I replace them 2 or 3 times a year, so I want something that's less expensive with that.

I'd prefer a belt driven bike since there's no maintenance there, but I'm sure that's part of why it costs more to replace the tires since I could it myself with a chain.
Preferably a bike with hard bags, or at least something lockable. Any suggestions?
A comfortable bike, I do long rides too.