General Q: Instantiate levels or use scenes?

I've finally gotten to the part in my mobil project where I will be designing levels, hooray! But I am not sure if I should use individual scenes for each level, or if I should have a single scene and simply instantiate what is needed in that scene. The levels won't be drastically changing, its more like the placement of a few buildings, what enemies spawn, and what details are in place.

Which do you recommend? Or is there another way that is more optimized that I don't know about?

 

Absolutely instantiating!
Far better optimization, faster build, APK size smaller and easier to control!

 

Awesome! Thanks! I'll build my project around instantiating levels then