Velero, the color temperature refers to the color of the light. Literally, blue-white, white-white, yellow-white, cool-white...the same way that fluorescent bulbs come in all kinds of "white".
What you really need to look at is LUMENS, that's the brightness of the bulb. And not just lumens but the dispersion of the light. For instance, if one LED is rated 1000 Lumens with a ten degree pattern, and the next one is rated the same 1000 Lumens but a 20 degree pattern...the second bulb is covering four times as much area with that same brightness.
A bright LED with a wide pattern is going to be expensive.