I have the Bar Fly pictured above and I’m happy with it. It comes with a bunch of different inserts for different brand computers. Also available in aluminium. The only negative is that it looks like the reinforcement webbing might fill up with water and not drain. Haven’t used it in the rain yet so don’t know if it’s a problem in reality.

Unrelated but on topic - I’m always on the lookout for low profile GoPro mounts to fit a 22.2mm bar.