No questions for me, definitely Sawk! Doesn't seem anything special at first glance but when it's used properly, WOW.
I beat endless amounts of opponents (not really but still) using Sawk, for me he, with stone edge and close combat, is incredibly under-rated.
I always thought fearow was underclassed because of how frail it gets, well I loved fearow from the beginning and before ever starting to ev train, i was able to use him competitively before sniper came into effect. Now that it has sniper I love fearow even more. My old movepool for fearow was fly, leer, roost, and return. The movepool now is drill peck, drill run, return, and leer with sniper ability. So yeah, i was shocked for fearow.