I have purchased MBP two weeks ago. I have also decided to buy T631 mouse and K811 keyboard because I use external monitors. When the two devices are off, WiFi speed is 85 MB/s; when they are on, WiFi drops to 5 MB/s. I tried changing router channels, as well as to 5GHz band instead of 2 GHz; did not help. I was on the phone with an Apple technician for more than an hour, and he was not able to help me. He told me that it is Logitech who can only help me. He also said that if I buy Apple Magic mouse and Apple wireless keyboard, they will not affect my WiFi speed; do not know if it is him trying to get me to buy Apple stuff or Apple's Bluetooth is different from Logitech's. I see that Magic Mouse gets really bad reviews for its ergonomics factor. Apple keyboard is fine, but k811 is much better in every way. I just wish Logitech would fix this issue. Is this the only option I have: magic mouse and apple wireless keyboard? I do not really want to go back to a wired mouse and keyboard? What do you recommend guys? Will magic mouse+wireless apple keyboard+ magic trackpad all work at the same time? DO YOU REALLY THINK APPLE PRODUCTS WILL NOT INTERFERE UNLIKE LOGITECH PRODUCTS I HAVE? IS IT DIFFERENT BLUETOOTH? THANK YOU!