Originally Posted by lwildernorva

Bottom line depends on your home airport, your travel goals, and the service either airline might offer to you. All else being equal, you can get 40K US miles for a first purchase versus 25K for opening the BOA card and then having to spend $7500 in six months to get 15K more. I like low spend cards over high spend cards unless I have a specific use for the miles/points I can earn with a higher spend card.

Your more general questions regarding an app-o-rama, including the SPG card (whose transfer ratio is generally 1-1, but 1-2 with United, with a 25% bonus for all airlines for each block of 20K Starpoints transferred), would probably be better answered in either the Credit Card or MilesBuzz forums than in this thread that's really focused on the US card.