I have had a 301 for a couple of years and recently added a 501. The first thing I notices is the menu scrolls horribly slow compared to my trusty old 301. So much slower that I am considering replacing it with the 510 and paying the $5.00 a month. Has anyone else noticed a decrease in performance with the 501 or is my receiver "special" in some way. If so, is the 510 going to be any better for me or am I just destined to live with this poor quality.