A “perfect light”, that satisfies all conditions and all needs, does not exist.
However we can select the best light for the use we will need, avoiding bad surprises.
Quality lamps have higher prices, therefore the choice of the lamp (or the light source) should be made considering the comfort for our eyes in the specific use.
The colour temperature does not affect the quality and the price of a lamp.
Keep in mind that between 2700K and 3000K, if the CRI is very high, the tone difference is irrilevant.
Regarding the quantity of light, it is always good to be informed about the lamp performance and the type of lighting we need or want to have: direct, indirect or diffused light.
– Direct light hits the surface with the totality of its luminous flux and it projects sharp shadows, it can dazzle.
Certainly, it is the most efficient (reading lamps, task lights, spotlights, …)
– Diffused light is softer and not dazzling. Shadows are blurred and the visual comfort changes according
to the relation between luminous power and the dimension of the diffuser (light globes, fabric lamps, oled, photographic lights…)
– Indirect light is perfect to create pleasant environment, as it is more comfortable and it lights, from the ceiling, the room in every direction.
Shadows are very soft and there is no risk to dazzle. However it is less efficient and you need double power to have the same light of a direct light.
It is better to decide the type of lighting in advance and later choose the lamp with the right luminous flux.