Being in the UK I'm not going to be much help when it comes to recommending brands. What I will say is this - the chock in your picture appears to have a 'flat' in the centre of the vertical stand-up that the wheel butts to. I suspect many are made this way to accommodate modern, fatter tyres but the skinny wheels on our bikes don't fit quite as snugly and can wobble, as Calj has said.
The one I use is very similar to that pictured but the vertical stand is a straightforward 'V' profile, allowing you to wedge the tyre right in there. It's pretty stable, but I only tend to use it as a 'third pair of hands' if I need to load a bike on a ramp or trailer and have no-one about to help me. It's imperative to have it fixed securely, if you don't line up the bike correctly or if you are on a smooth surface the chock can skate across the floor resulting in damage to your bike and your back. I know this from experience:(