I recently joined a new country/country rock band, and got one of the American Standard Teles with the custom shop pickups from Sam Ash for $799. For that style of music, it's perfect. It'll get really fat and crunchy, with huge singing, sustaining leads, but still stay really clear and biting, without being harsh or painful at all. It'll twang nicely on clean amp settings too. I was in a rock band before where I used humbuckers and went for a wall of guitar kind of sound. I don't think the Tele would do as well in that situation because it doesn't compress the way the humbuckers do, but the Tele has a clarity that the humbuckers lack.
Bottom line, the American Standard is a fantastic guitar for styles of music that call for that unique Tele sound.