Yeelight - cheap, but does not work.
Philips Hue - expensive, but works.
Yeelight - sends you lots of adverts in Chinese, but no support.
Philips Hue - does not spam you, support is excellent.
Yeelight - always adding new integrations, even though the lights do not work.
Phillips Hue - other companies integrate with Phillips Hue, as it just works.
So, make a decision, if cheap non-working Yeelights, are really a cost saving, or just a waste of money.