Originally Posted by alliance

If DL/CO won't match NW for you, another option (but more $), would be to do a gold challenge on AA and then use AA Gold to status match to DL/CO... but really, unless you are flying DL all the time and are trying for upgrades (which as a lowest level elite...), there is no reason to do that (and waste a status match opportunity for lowest level elite when you already have status on that alliance). NW is the best program for redemption, earn rates and promos between the three.