Great transformer for one Cree CXA2011, gives it 680mA so CXA2011 gives 1400lm, works great, it is only little warm, rather room temperature and give stable voltage.
This led transformer is very good, i use it with 25 leds in lamp that light my room, transformer is very stable, and not hot, have rather room temperature. Here you can find more:
This Warm White Leds have very good value for money, they are realy warm ligth and in my opinion have nice CRI more than 75. 25 of them (320mA) works like cxa2011 (680mA). I used them to light my room. Here you can find more.