Tmg51,
Nice report. Much appreciated.
As far as the taxi situation goes, you should always watch the meter. There should be no rip-offs in metered taxis. If they try to charge a rate that is not on the meter, just let them know. Taxis are quick, easy and cheap. I use AAA all the time, you can all them anywhere in the city and they will send a taxi out right away. It's a great convenience in Prague.