I have changed a few of my bulbs for LEDs recently, and I have been on a very short but sharp learning curve !
Wattage is meaningless when it comes to LEDS. Even in the olden days, when we all used filament bulbs it didn't really much, other than the power it took to work, not the quantity of light given out.
If you have experienced a "cold" light in the past from LEDs, its because you bought the wrong sort of LED. They come in a warm white, daylight, and a cold light, and even in lots of different colours.
Can I extol the virtues of LED Hut
http://www.ledhut.co.uk/?gclid=CPbr9rbMg8oCFYOfGwodvJ8J5w
They quite the best mail order service I have ever used. I ordered a bulb on the net from them on Sunday the 27th, and it arrived by Hermes Courier on Monday afternoon, and that is at this time of year....a remarkable service by any estimation !
If you look on the site, it very easy to make the right choice. But remember its not wattage that counts these days, its lumens !