How much more easy can it can than this? I just took this pic a minute ago. This is GBPAUD which is my current "winner":
But I could post pics of gbpjpy, eurgbp (doing great at the moment) and many more. I don't think there is one specific pair which is "easier" than another. If you've got the right set-up, you can trade any pair (even "many" pairs, which is better because of the diversification aspect).
Happy trading,