I have Citizen Eco-Drive World Timer and I love it! It's the most accurate watch I've seen yet (0.5 sec slow after 3 weeks), and not having to worry about batteries is great.
In the spring and summer, short sleeves and ambient light are sufficient to keep it charged. In winter with long sleeves, I just leave it in my window for a weekend day and it charges it up great.
The World Timer also has a titanium case/bracelet and it's a lot lighter than steel. Plus, no reactions to skin and sweat.
I do have a couple of small scratches on the crystal. That's the only downside: mineral glass. Sapphire would have been great.