COPA is a mixed bag in my case. I would not want to travel to "South" South America via Y nonestop from IAH, yet I cannot afford BF fares. However, as a Plat, I can make use of CM and still be eligible for EUAs. Granted BF is nicer than F -- but I'd much rather park myself in F than Y, even if it's on a 737! I don't know what your particular situation but if your planning to buy Y, want F and be an elite member - go CM.