I bolted in mid-2009. By the end of 2009, I had flown 150k EQMS on CO and 110k on AA, in 2010, I flew 125k EQM on AA and 76k EQM on CO, and this year, I will end with 165k EQM on AA and 51k EQM on CO/UA.
I will always keep Star Gold, but for me, flying CO/US is a non-starter until upgrades are being reported at 75%+ levels for 1ks, or until E+ is in all planes. Until then, I will fly the minimum possible to retain Star Gold. And hopefully, most of that will be flying on partners like SQ, TG, LH, LX etc or by earning FLEX EQMs.