I am completely new to the "miles" thing. I will be flying United a lot in the next couple of years and hope to earn enough miles through a credit card for upgrades or free trips. I've been told I can transfer miles from other cards to United but I'm wondering if they are worth the same amount of benefits as getting a United Mileage Plus Visa card. If I transfer from another card will I need more miles for free trips or upgrades? Thanks to anyone who can help me decide. I know in this day and age it must seem ridiculous that someone is so new to the idea of using miles but we do still exist....and I hope to change that!! Again, thanks.