kempis,
do you have any experiences to share yet, other than getting the comp? I'm not planning on changing my flying pattern (mainly Star) but I may switch in 2003 away from Mileage Plus for mileage accrual. Aeroplan and Frecuenta are the main candidates. MX seems to have a pretty nice Star Award chart and they comp. AC will likely not comp, but may be the easier programme to deal with? Both give Star-wide bonus mileage, in different ways (MX 50% bonus, AC threshold bonuses). Any advice? Will you focus your Star mileage into AC or MX (or both) in 2003?