Of the 3 above mentioned planes, which will be better for a beginner 3d plane? Which is built stronger?Which flies better? I like the magic extra, but I read that the covering of the magic extra is not very good, while the other two are translucent covering that I am afraid might give me orientation problem. I have never done any covering before, so I really don't wish to step there. Can I use those Adhesive-backed monokote trim sheet under the wing on the covering to give better visiblilty? Is it just stick on and does it last? I am powering it with a tt pro50, so power is somewhere in between a os 46ax and os50sx. Using standard sized electronics, if that makes a difference. Thanks.

Go for the Harrier, its strong as hell and is a way better 3D Plane then the other two mentioned.
About the orientation issue, all I did with mine was make Yellow sqaures for the bottom of the wing using vinyl, works great looks good and it didnt take long at all maybe 15 minutes.