Earlier I was using the Sony Ericsson Xperia X10 mini pro for tracking cyclists but currently I am trying to use the Xperia active. This is only because ;it is having great battery life as compared to the pro and it is also lighter as compared to the Xperia X10 mini pro. So in short, I have been used both of them and I can say that the GPS is much better in the Sony Ericsson Xperia X10 as compared to the Sony Ericsson Xperia active. I just wanted to share thing thing to you and so I am posting this over here. If you have something else to say about these phones then you are most welcome.