I’m a big fan of Garmin.
I acquired a Forerunner 405 about 18 months ago from Chris Auld (even the toys he doesn’t want any more are cool!)
I have been raving about it to everybody ever since.
It’s a standard ANT+ sports watch which connects to a heart rate monitor and cadence/power meter on my bike, but also includes GPS built in.
The killer feature in my opinion is Garmin Connect, a website where you can upload data from your device. This gives you a great view of the information collected while you’re training or racing (including plotting routes on a map) and let’s you keep track of this over time. For example, here is a replay of the bike leg I did at Challenge Wanaka earlier this year (please focus on the first half of the race when I was flying, not the second half as I was dying up-hill and into the wind!)
This site has a really clean and simple design, and is a great example of a site that fades nicely into the background putting the focus on your data.
And, now that they have proper support for OS X, the integration is super slick – I simply put the watch in the same room as the computer at the end of a run or ride and the data is automatically sucked out and uploaded.
So, all was good. Until…
I was on a long training ride a couple of weeks ago and noticed that the display on the watch was starting to fade in and out. By the time I got home it was so faint that you couldn’t really see the details anymore.
As I write it’s less than 20 days until the Taupo Half Ironman, so (if you’ll excuse the pun) it couldn’t be worse timing.
The next day, I took the watch into a local shop to get the battery replaced, only to be told that they couldn’t help me. So, I called the Garmin service department, and it turns out that the battery is not replaceable.
I have to say, they did everything right. The lady I spoke to was very friendly and helpful. Even though the watch was outside of its warranty period, once they checked the serial number they offered me a replacement at a significant discount to the normal retail price which arrived by courier a couple of days after I returned the faulty one.
But, I couldn’t help feeling like I was the sucker – somehow I’ve become locked in by an eco-system of accessories, online services and persuasive support staff.
So, I guess I need to add Garmin to the list of companies that has earned the right to tax me as they see fit.

Get the 310 XT, much better for battery life and waterproof to 50m (not that you’d get a position at that depth!). You may be able to use your existing HRM, then add cadence and the pedometer options…
I agree with you regarding Garmin Connect – I even use it for logging activities that I don’t use the GPS for.
Good luck with your event!
The 310XT does look awesome. And the Tanita body composition scale is an interesting add-on too.
Damn, so many cool toys, it’s hard to choose!
There has to be someone out there that will replace the battery aftermarket. I guess you could lit it on Trade Me and they will find the watch.