I love love love my HRM. I have a Polar F6. It retails around 125, but i got mine for $90 on sale. I use it daily. I try to keep my HR between 120 and 160 for most workouts. any lower, and IMO I'm not working hard enought, much higher than 160 for too long, adn I bonk in teh afternoon. It also tracks my calories burned, which is very motivating to me.
On tues, I am taking the resting and cardio/VO2 testing to see where my AT is, adn what zones I burn fat in. ANd to find out my resting HR an dhow many calories I burn a day. This testing is my 41st Bday present!
I looked at the F4, F6, and F11. I chose the F6 over the F4 b/c teh transmitter is coded and doesn;t interfere/pick up other gym user's HR's. I dedided that I did not need teh extra F11 features.
GPS woudl be very nice for outdoor runs. FWIU, Polar is just releasing a GPS model. But those Garmin's look completley droolable for outdoor runners.
A body bugg does not measure HR. FWIU, it measures by movement, change in skin temp and humidity (I think). Polar is also coming out with an activity monitor, which I assume is to compete with bodybugg
Based on my research, Polar is teh most accurate for HR and is teh "standard" to work with gym machines. But Garmin is best for the GPS for outdoor activities. IME, Polar has great CS too.
Here's a
pretty good deal on teh Gramin 305 .
HTH