Need HRM recommendations-cost is not an issue

I am training for my 1st half marathon in February and would like a GPS HRM. I currently have the Polar Ft4 and it has been great so far but now I'd like to get one with a GPS to more accurately track my mileage. I am looking for something that includes the following items, and cost is not an issue;

1. Heart rate monitor (can have a chest strap as these don't bother me and I'd rather have something that is accurate)
2. Calorie counter
3. Time
4. Average/Max heart rate
5. Distance
6. Pace (optional)
7. Elevation (I also hike a lot and would love to have this feature)
8. Sync with computer to track my routes
9. Music (optional but would be super handy)
10. Simple to use