Looking to get an HD pocket camera for an upcoming trip to Africa. I have to pack light so I'm thinking I will purchase a pocket HD camera. I'm looking for one with great image and preferably better than 2x optical zoom, although it doesn't seem like many are out there. I've read the kodak zi8 has a great image, but it's rather thick and bulky. And of course the mino flip was mentioned for it's video quality. I also can't decide whether a small internal memory capacity is better than external SDHC card memory. Anyone have any ideas, experience with the cameras or words of wisdom?