I have just purchased the 256, the 254 I have had for a few months. Setting up the 256 I connected to my routers 2.4Ghz wireless and did a speed test in the inner portal and got 30Mbps on the test. I then disconnected the 256 and connected the 254 to the same network and got 42Mbps I ran this test numerous times and always got the same results (a difference of at least 10Mbps each time) Has anyone else noticed results similar to this?