I've been trying to choose an in-dash navigation system for my car, and I was going to get a Pioneer Avic f700bt, but I recently found a different unit (Pioneer Avic Z2) for roughly the same price. The Z2 has a bigger screen which is good, but the one thing it doesn't have that the f700bt does is HD Radio compatibility. Unfortunately that was one of the things I was looking forward to most, so it might be a deal breaker. If anyone here has HD Radio, could you tell me how much you like it? Is it worth it?