The Mercier and the KHS are the exact same bikes with different decals and paint.
if you want SS, not fix and a more cyclocross-y setup you could also look into the Bianchi San Jose. but the biggest one only has a 58.5 TT
if you up your budget a fair bit, and want a more track-y bike, then Bareknuckles run big. they make a 62 w/ 59.5 TT