No-one but me it seems....We've tried the airvent one, they are not very stable.
CD one sounds good, no one uses CDs in their car any more.
They are quite pricey, but not quite sute how they attach or mount on the dash.The Brodit ones work very well.
There are installation instructions on each link. They clip to the existing trims/panels and also use peel and stick adhesive. I like the fact the air-vent one doesn't affix to the fragile vanes but to the surrounds. Pity they weren't around years ago!They are quite pricey, but not quite sute how they attach or mount on the dash.