One thing I do not like about my PS3 is it does not have a proper 2 prong plug and no chassis ground and noise via HDMI ground loops seems to be handled worse than other AV devices I have. In other words the noise floor is a lot higher than other devices so much so that I don't bother with SACD's with quiet passages. I have spent much time alleviating the issue but still think it is inherently a noisier device and I am not even taking into account the fan which doesn't bother me much but many people have complained about it. Basically the focus of the machine is a gaming machine and not a quality AV device and IMO it shows.
Not to say it doesn't have it attributes even in a HT environment.