MR16 5W 500lm 3500K 5-LED Warm White Spotlight Bulb (12V)

Pros: It's the bulb with most lumens I found. The relationship price/lumens is the best I found. It has the best price I found (It's DealExtreme, of course :) ) It's build with good materials. The packaging is simple and secure. The product is well protected.

Cons: The light is not as warm as I would like to. It's a little bit white, comparing with the classical bulb. There is no owner manual (Does you really need it?)

Other: I recommend this product. I bought one to test it. I have bought another one (I just need two at home).

Pros: As previous reviewer said excellent amount of light for the price, and quite good quality feel to it. Also these work fine with my electronic transformers. When I bought this I also tried other LED bulbs 131701, 139916 and 139920 all of which are not as high quality as this unit, don't put out as much light, are more expensive and don't work with most of my transformers.

Cons: Puts out a whiteish light, it's not bad i.e. it's not a blueish kind of white but is closer to a 'daylight' CFL, than my 50W Halogens whihc put out a very 'warm' light. Also these have a bit more of a focused beam than my Halogens, i.e. it's more towards a spot light as per it's description.

Other: Great product, and great value, I'm fitting my house out with these and looking forward to saving money.