I've flown VX once (JFK-SFO). I would consider it again for NYC-SFO/LAX/LAS flights. Good planes, good service, nice gates, etc. No reason to cheer for this good airline to fail. The FFP could use more partners, but I've seen some decent redemptions available via Elevate Mileage (usually when the cash fares are on sale). I see it as a supplement to another legacy carrier (I fly DL). Unfortunately I will be flying my next NYC-SFO flight on a DL/UA combo as I wanted MQM on each.