I recently purchased a Godin 5th Avenue Kingpin archtop. It sounds quite nice amped and it sounds pretty sweet un-amped if I'm finger picking. But with a pick, the strings come off sounding... "tinny".

Most of the jazz guys recommend replacing the stock strings with flatwounds. But I'm after a more blues/rock sound. Any recommendations for something that will work well while amped, but sound good acoustically?