I recently bought a Panasonic DVC30. It was a spendy camera, but I bought it make railroad videos and trip videos for my website and possibly eventually to sell. I would considered it a borderline pro-camera and is probably more than you need, but what impressed me most about it was it's durability and over all design. More compact than the Canon and Sony pro-cameras too, although the Sony and Canon have a few more pro-features.
I'm not an expert on video cameras...I'm pretty new at this...but I think the Panasonic DVC30 would make a great durable high quality camera for a world wide trip to make upper end home movies with.
For a consumer model I don't think you can go wrong with a Panasonic GS500. If I had to a buy a cheaper model for home videos, that was going to be my second choice.