Have you used an iPod trainer?

I am interested in using an iPod trainer and am totally in the dark about what's hot or not. Has anyone used an iPod trainer??? Any freebies out there to try??? I'm joining a new gym and want to give myself a little something-something new to go along with it...it was too predictable to go for new running shoes ;) Thanks much!

I haven't but I has thought about it too.  Go to discoveryhealth.com and I think they still  have a link for a free trial.

I don't have an iPod trainer but I have a Garmin Forerunner 50 with the footpod, heart rate monitor and cycle sensor.   I absolutely love it.   It spits out data when I get near my computer and calculates my caloric expendature, pace, speed, distance, cadance among other things.   The BEST thing that I like about the watch is that at any given time during my run I can glance down and see how far I've gone and what my pace is.  It's very motivating.