1. You can find article here — https://sundaylamp.com (use translator)
20-35 years (4 hours per day) must works good and with spectrum too, because there is big aluminium heat sink and leds works with middle power (without overloading)
2. Difference between StarLike and SunLike it is SPECTRUM:
StarLike:
SunLike:
BUT
StarLike have low efficiency (lumen per watt), it is about 50% from SunLike, so bulbs with it will be expensive and not so bright