Don't think you need to be premier, but definitely a United flyer. The triple miles on United purchases, double miles on gas, groceries, and home repair, and the ability to earn up to 5000 EQMs make this a pretty good card that is no longer available.
Originally Posted by
garykung
MileagePlus Select is a good card only if you are a UA Premier member or you don't mind paying the AF. Other than that, M+ Explorer card is a better card as it can give you actual benefit you can use.