Have you tried one & are they any good ?.
They are very good. But it is how you actually use them which determines their results. This time of year, you really need to get a warm day, and warm the paint up by keeping it in your trouser pocket for half an hour before use. And then shake it well - like you were giving it a good tommy!

And finally, if you are touching up really small chips, use a cocktail stick to apply the paint, rather than the supplied brush.
HTH.
