Fan noise is extremely subjective. One person can say it is quiet. Another could say the same exact unit is loud.
When I first started with HD DVD a couple years ago or so, I thought the fans were loud. Now, I don't even notice them in the least. If you sit and listen for it, you will probably hear it. When you get use to it, you tune it out easily.
My thinking is that we were spoiled with DVD players, and antique tvs that made no fan noise. Then, we start the HD generation that required more cooling. Of course, as time goes by, this will lessen and disappear.