The GP extra is not a good choice for a second plane.
They come out quite heavy, and are VERY prone to snap stalls. They are fine in experience hands, but can be a little booger to land.

The Something Extra is a far better choice. I have both, the something Extra gets flown often, My GP extra just gathers dust.

I went with the Tower Voyager for my second plane, but got bored with it pretty quick, if i could go back and do it again i would have gone for the Somthing Extra straight away.