Eric Greenwell wrote:

very noisy,

What does it sound like? I've never heard one. Worse than a DG 400?

It's obvious you've never heard one, if you ask this. Go to a model
aviation club (I don't know the correct word, but you know what I mean)
and listen to their model jets.

The relation of my club to our neighbours is not always without
problems, but all in all, we live in peace together. I guess this would
change very fast if we would operate jet driven gliders!

Stefan