Harley Davidson Street Bob or a Harley Davidson Softtail Standard?

I have been riding a 1999 883 for six years and I want to move up in the world. I'm 5'9'' and 120lbs but I want bigger. I've looked and can't make up my mind on a softtail standard or the street bob both would have to be an 2006 model. I would like to have comfort and performance with out putting money into the bike.. thanks