Oh, I almost forgot..
I tested a new trick when I painted the body.
I found these Takrag's at the paint shop. It's like a slightly sticky cloth that you wipe the body with before painting to remove any dust.
Worked really well I must say!
One bag of takrag cost like 1 EUR and there is plenty of rag in it so It will last for several models I think. Just close the bag carefully so the sticky stuff doesn't get to dry out.