Here's my two cents.
Like KandK, I got the bundled FR60 for my wife about two years ago from Amazon. Looks like it's $130 there now, which I think is similar to the price I paid. After returning the first one, which Amazon made easy, my wife has been happy with it. She likes to run as well, bikes half the year, and doesn't swim. It comes in a few colors, if that's Katie's thing.
My wife is running the Colfax half marathon in Denver in two weeks. Her best friend and training buddy has a Garmin that looks a lot like the 310XT. It probably is the 310XT. We make fun of her because it's way too big. On a woman's wrist, that thing is like strapping a Garmin 500 to your wrist. My wife would never wear something that big.