There are now many general-purpose consumer LED bulbs that give off good light. With so many, how can you tell the difference?

After years of work, LED lighting company have finally achieved their goal of producing a good replacement for the common 60-watt incandescent bulb. 
Cree earlier this week released a bulb that mimics the light and shape of the conventional incandescent with aggressive pricing, ranging from just under $10 for a 40-watt equivalent to just under $14 for a 60-watt equivalent. (See, Cree Introduces an LED Bulb Edison Would Love.) But Cree is joining many other LED lighting companies targeting consumers. With inefficient traditional incandescent bulbs being phased in many countries, there is a lot of competition.