Which United credit card is right for you? Comparing the Explorer, Quest, Club and Business cards

If you've flown United, you've probably wondered whether you're leaving value on the table by not carrying one of the airline's cobranded credit cards. And after United's MileagePlus changes earlier this year, the answer is more likely than ever to be yes (more on that below).As a United cardholder myself, I've seen that value increase firsthand: I now earn 20% more miles on United flights than I did before the changes.But with several different United cards offering different combinations of perks, figuring out which one is right for you isn't always straightforward.United offers a range of airline cards with varying perks, from a straightforward personal option for occasional flyers to premium personal and business cards for travelers seeking lounge access and elite status. Choosing the right card comes down to how often you fly United, which perks you'll actually use and whether those benefits justify the annual fee.Here's how the United consumer and business cards compare — and how to decide which one is the best fit for your wallet.United cards at a glance: Annual fees and welcome offersHere's a quick look at each United credit card's annual fee and current welcome offer:CardA...