yea head-fi.org is your source
Just keep in mind some people there are neurotics. I enjoy my headphones and spent more than the average person would on them but I'm not overly obsessed with every detail and actually spend more time enjoying the music than being critical of it. So with that said, take any review there you get with a grain of salt. These "sound differences" people there talk about in most cases are minute/non-existent to the average user.