What has a better transmission range? Rc2 or Rc Pro?

[FireChild]

I'm just wondering if anyone has experience using the Rc2 or the RC pro and if there's a noticeable difference in the range you get? I have an RC Pro 2. Have not used it yet with my M4P. Someone mentioned that the RC2 has better range over the RC Pro 2. I do not know if that's true or not. So I am considering getting the RC2 to use with the drone. But the ability to side load apps would be nice but I'd rather better range over anything! And I can do that with my RC pro 2. I can't imagine that if it's true that the RC2 has better range over the RC pro 2 than the RC Pro would not be any better.