Both are quality harnesses. I chose Crow just because I liked the buckles a little better and they had a closer color-match for KELLI GIRL's colors.
Having said that, they are fading fairly readily under outdoor conditions (UV?), specifically the red on the pads. I haven't pursued this issue with Crow, so I have nothing yet to report regarding any service or warranty follow-up (not their fault).
Comfort? Awesome!