The tablets will leave an aftertaste a lot of times. I got a First Need several years ago for canoe trips. I works great, but takes a while to pump a quart of water. If you are camping, it's the way to go. The one I have will filter out all chemicals and every organism but viruses. I understand that the new ones are even better. I also got one of those queeze bottle waterfilters to carry turkey hunting. It's lighter to carry and I'm generally near a water source anyway. That's worked great too.