basic HR monitor or monitor with bells and whistles

I currently run with my smart phone on an armband.  I use it for music, gps, speed and time (endomondo), I also use a basic timex watch to track time and splits during runs especially if im doing intervals.  I use a basic cyclocomputer on my bike when i ride.  I have had no problems with any of these items.  Question is im looking at HR monitors, I have seen a few i like that will replace my timex watch and add the HR features.  for an additional $100-250 i can jump to a model that tracks my distances with GPS and can double as a cycle comp.  Is it worth the extra money for all the bells and whistles if im still not eliminating other decives (ie...i will still run with my smart phone for music, and this provides gps and maping)

Edited by triitoncemaybetwice 2012-08-06 9:14 AM