Avcard / UVair, payment cards

[Uncle Wiggily]

Hi,

I am in the early stages of trying to decide what aviation payment card to acquire. Are there basically just a handful of payment cards? Avcard, Uvair, AirBP? Do they all have similar interest rates? I am interested in a multiservice type card, i.e. one where I can take care of all the trip charges on a single card, although I am sure you can do that with Avcard, right? What makes one card better to use than another?

Thanks