Am in the process of putting together a group to Chile and Argentina for next year, which will include stays in B. A. , Bariloche, and Santiago, plus some overnights during the Lake crossing. Is there an advantage to starting in Argentina rather than Chile, or doesn't it matter? I have us flying into B.A.and continuing on, but I just double-checked the airfare ,and it's cheaper to fly into Santiago and start our trip in Chile, it would seem. Just wondered if anyone out there had a preference as to which direction to go in,and why? Thanks in advance!