Hi there and welcome
For which country do you wish to know this for?
ok, it is dependent on exactly what you want, but you can see Giffgaff is currently one of the best.
Though I have a list of comparisons for you here
If you would like any additional information or assistance, please do not hesitate to let me know.
and if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.
Is that for the US?
It keeps giving me the prices in pounds
yes, but your computers regional settings may be detected in UK.
Use this link as it will ignore it