I have a Airport express set up downstairs as my main router. In my room upstairs i only get around 40% of the signal. Can anyone recommend any good Wifi repeaters that will work with the Express, with a reasonable price around £50? Also will i loose much of my speed having just 1 repeater? And one last thing. If their is no wifi repeater that works with the express, is it possible to have another express as the repeater or does it only work like Extreme > Express? thanks!