Those closer to 100 will better enable colors to appear the same as if viewed under the light of an incandescent bulb. Warm-up time is how long the bulb took to reach near full brightness.

Any discussion of light bulb lifetime would be incomplete ... GE 15,000 hour “Classic”, and 25,000-hour Cree A19 LED bulbs. There’s more to an LED bulb than just the LEDs.