I have no idea what's going on in the heat pump world today.
I've lived in a couple of places with heat pumps. I have no real complaints, although one person who lives elsewhere, but visits WA in late winter/early spring, has complained about the heat pump where he stays. He hates WA winters, and the heat pump doesn't seem to put out as much heat running as he'd like.
Heat pumps are a nice solution in some parts of WA. Get away from cities, and gas lines vanish. Heat pumps can be a nice solution in that case. However, if I had a working gas furnace, I don't think I'd consider switching to a heat pump. At most, I might consider upgrading the gas furnace.
The air conditioning aspect is of little interest to me. AC is nice maybe once or twice a summer. Even in the summer of 2009, which was warm, and had, as I recall, some record setting days, I survived without AC. Although, the value of AC in this climate is probably one of those "your mileage may vary" deals.