I bought the cheapest Philips smart light I could find for double the price of this one, it worked well but wasn't as bright as I would have liked and didn't have any colour options at all.
So I bought this one. Half the price of the philips bulb so even if it wasn't great I wouldn't have been all that fussed. I'm so glad I got this one. It's 'warm white' and 'cool white' settings are much brighter than the philips bulb and it has all the colour options on top of it (which aren't very bright at all, but it's better than not having them at all).
If you only want smart bulbs for the warm/cool white settings, these work great and are much cheaper than the philips equivalents. I could almost change out every light in my house with these for the same price as a single multi-colour philips bulb.