Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Light but...

The light from the bulb is excellent, the warm light feels like day light, while the Verilux daylight really feels too strong on the blue spectrum to me, at least I don't see the same color under the sum light.The Panasonic bulb is great except it takes a while to reach full brightness(like 20 sec. or so). and it starts very dim. The 15w looks like a 20w. incandlescent for the first 5 sec. if you have not turned on the light for a while(10 minutes). which might annoy some people. Yet I don't have problem with other bulb flourscent light with such a long delay such as Verilux.