Is your audio gear (and your ears) ready for lossless?
Here you will find a set of ABX tests allowing you to compare lossless and lossy compression in a variety of formats and bitrates. This site is still in its infancy, and the number of tests available will probably grow over time.
Well, they did not. The site was built in 2014 and updated four days later, and then never changed. Looks like nobody really wants to know whether they can hear the difference between different encodings.