A frame is more than just a skeleton.

How to distinguish “pressed paper” from real 3K weave and why frame rigidity matters
A checklist of essential spare parts for your leisure time

Why you can never have too many propellers and why it’s important to have spare nuts with different threads
How to choose motors that won’t let you down

But in the air, it’s not just the thrust that’s important, but also energy efficiency and the absence of vibrations.