I like the downtown Disney view, because you can see the fireworks from there, but it really depends on how often you are going to be in your room and what you want.
The CA view is cool (I'm fuzzy on what exactly you can get for each price point, or if you have to have a one or two bedroom to get certain views).
We did concierge at PPH and it worked well for us because we made the effort to use it. We had breakfast every morning, grabbed water and soda and snacks to take into the park and we made sure to be there for the cocktail hour thing they offered.
If you don't do that, I don't think its really all that worth it.