Definitely agree with Wombat on the navigation issue. When I need to go change setting on the PS3, it is always a hunt. The 360 stuff is all pretty contained and easy to find. I also think the way Sony and MS approach their systems is making me lean toward the XBOX One. MS seems to add game changing infrastructure with each system and Sony seems to play catch up.
The original XBOX had a broadband only online system that was poo-poo'ed by pretty much every gaming journalist as being too exclusionary. The PS2 had dial up and broadband, but in reality, the vast majority of games were broadband only because of lag. The original XBOX also had the first online console store with XBOX Live Arcade. The 360 launched with achievements. Now everyone has them. The 360 was the first one to get Netflix. Now it would be weird to not have Netflix on a system. From there, the 360 has gotten app after app and so has everyone else. Even though MS gets a a lot of hate for not working with Indies, they have the only console with a dedicated indie channel. Sony has played it safe and that's fine, but I want something more than a 360 or PS3 with better graphics.
I like MS' vision of expanding the console beyond games only. I simply can't understand why people constantly complain about added features and just want a system that plays games. The TV functionality is intriguing to me and I think the voice commands are something Sony is going to adapt down the road. I am still waiting for a bit more information before pulling the trigger, but MS' track record of pushing forward is compelling.