heart monitor

Do you use them and what  brand?

I use a Garmin for running and cycling.  I don't worry too much anymore about pulse anymore, since i can guage when I am between 130-160 but it is great for helping with pace.  Sort of feel lost without it.  It also has a built-in GPS so it gives an accurate distance and cadence.  I also have a Polar somewhere, but I don't use it much anymore.
Rob

rob: i got my dh the garmin 405 2 weeks ago and he has had problems with the upload. customer service taught him how to make it work when nothing else does which he has had to do every day for like  a week.

any tips?

he absolutely loves it when it works and thinks it has already improved his running time

I use the polar....in triathlon it's one of the few you can wear in the water.

I have a polar bike computer.