Ok, I have the assortment of gadgets, but they've been acquired at different times for different purposes....

-got the GPS years ago for general outdoors use (now on GPS #2, the one in the pic)
-got the HRM a few years ago when I had aspirations of running regularly with it. It's the cheapest one Polar had at the time, very basic. (I didn't use it much after getting it and it sat idle until I started using it this summer after getting into cycling. Was happy the batteries still worked! Now I wear it almost everytime I exercise).
-Got the wireless compu when I got the bike this year (no cadence, now kinda wish I had it, but I am still learning the one I have)

Anyway, two points - I like having the separate devices especially the HRM since I can use it at the gym/spin class. I also think, overall, they do a very good job at what they do. If I were starting without any of these, and with the focus of cycling, I'd probably go the Garmin 305 route.

The second is a question - Veronica how did you rig a mount? Is that a car mount? I am already at a bar space premium, but that still is very intriguing. My GPS use on the bike has so far consisted of stowing it in my seat bag and pulling it out when necessary. I have only done this for out of area rides tho. I could definitely do this on the other bike in any case.