Unity Cheetah scale

Hi all,
I don't have Unity, I used up my trial while still working through the tutorials and just got an extension (thank you!).

One thing I've had an issue with in other engines (such as Torque and 3D GameStudio) is that when I create a model and import it into the engine, I can never get the scale right. the models I import are either too large or too small and then I need to scale them up or down in the engine.

I'm probably going to be using Cheetah right since I'm really at the hobby stage until I get more experienced with it. I've tried my hand at Blender, but it's not for me.

If anyone has any suggestions on how to deal with the scale from Cheetah (or general tips) to Unity I'd really appreciate it!

Thanks!