I have seen so many examples where the light is purely a very dim glow.
Are the LED versions any better than the ones seen on market stalls?
Solar Powered lights require enough light to charge the solar batteries. If the charging is impeded in any way, the light will be dim. I found that the LED lights take less engery to charge and stay on longer, even when we have had numerous cloudy days. Make sure you get a charging unit for the solar powered lights that can be mounted in direct sun. That means there will be a wire. Otherwise, if the solar panel is located on top of the light, you will need to be sure that the panel is exposed to light for a good portion of the day to get them charged properly.