I have a Time Capsule creating a b/g/n network and an Airport Express extending it. When connected to the Time Capsule, I get ~16 Mbps but when I connect to the Express, I only get ~5 Mbps. As I understand it, this is normal. My question, however, is can I manually control which base station I connect to when I'm in range of both? It's frustrating to know that I'm in range of a very fast connection but to be automatically connected to the slower one.