I need help to choose what single-board computer to use on my build to make a portable pc

[Antrel59]

So i want to make a fast portable pc using a single-board computer but i cant choose one of these three
1. Rasberry Pi 2
2. Banana Pi 2
3. Orange Pi 2
Which one would you suggest me

 

[Outlander_04]

I like oranges . But I also like raspberries

 

[Antrel59]

I like oranges . But I also like raspberries