Good to hear positive comments on these... I was worried. I just bought two warm white and two cool white 10W LEDs (square) and another five 3W red LEDs on eBay. I am probably going to underdrive them... so running the 10W at maybe 5-7W and the 3W at about 2W.
I got my first one in today (I like to order them from different sellers - although some of them look like the same guy with different seller names). Waiting on the rest...