How should I draw game interfaces? Textures on planes or GUI?

How should I draw game interfaces. I am working on RTS and I need a map below. Should I draw it as texture on a plane and then parent that plane to camera, or should I use Unity GUI system somehow? Can you me guide what commands I need for this, I am new to Unity, but not to game programming.

Thank you

On the long term, it’s better to use textures & planes, because they will better scale with resolution and different aspect ratios. And it’s more efficient, as long as you have all of your GUI stuff on one single texture atlas (i.e. using EZGUi, 2D Toolkit or some other tool which helps with it).

For Mobile devices you should avoid Unity GUI System, because can significantly slow down performance on these devices.