Either one wouldn't be bad. At your weight though you hardly have anything to worry about except spoke count and "spontaneous carbon fiber combustion" (joke). Any aluminum frame will work pretty much. If you are concerned about the price check around. End of year prices should be dropping. Also you can check a mail-order site that get's bashed a lot on this board. Maybe someone will provide the address. I don't want to be called a "Shill".