I am thinking about buying a quilted Stella but am concerned that this bag will be too heavy. Do you have one or have you tried one on? How comfortable are the double chain straps? I have a Stam that I don't use because I find it heavy and uncomfortable. How heavy is the quilted Stella compared to the Stam? BTW, I have a quilted MP that I love. I just think it's too small for everyday use and wanted something bigger. I think the quilted MP is quite comfortable. Thanks!