I have the Yamaha BD-S677 has three months very happy in my possession and am. For the other formats / files that will play the vob files (DVD). The menu navigation is very simple and intuitive, but this is unfortunately removed from his account far from Panasonic DMP-BDT500EG. Here the Panasonic is better to Welter! The possibility of connecting Panasonic proposes the Yamaha clearly! I had the Panasonic DMP-BDT500EG tested for 2 weeks and yet decided on the Yamaha! Now for the Yamaha advantages: - The best app that I have seen so far - with a nice graphical representation and spitzenmessiger response time (WLAN) - Fast start time / Betriebsbereitschauft player - Very good sound - Very friendly use as a CD player (with me in conjunction with AV Receiver Yamaha RX-V777) - Very acceptable drive noise One star deduction for witty remote puny buttons!