I went the other route and got a forerunner first. It's the 305, which means it can't come along with me on the swim, but that's what laps are for? It works for me on the bike, because now I don't find myself staring at data on the ride and will only take occasional glances to check HR, HR Zone, mph, time elapsed, time. And then it can easily be transitioned into the run segment with a few button presses or press if you're on a multisport brick. Only $108 too~ Compared to the $300ish for a 310xt that can go in the water.

It also has two separate profiles for your running and biking (weights).