I have a sawyer bucket adapter system, chemicals, but best of all I have a still. That and my backyard creek ensure I'll never have trouble getting clean drinkable water. I have a post here showing my still.
For carry or long term bug in use? For bug out Katadyn and MSR's are top shelf. For bug in than long term is a good hand pumped well from a clean water table or a still. I use a Katadyn Mini for my hiking/bugout use as it's compact and light with one of the highest gallon filtration rates for a carry filter. A bit bigger and very nice is the Pocket, but there too big for me to pack. Ceramic filters in cold weather can be a problem with the residual water in the filter freezing and cracking the filter so if you're up north look towards a charcoal filter.
Since you said purifier that knocks a lot of the hand pumping devices out because they are filters. My favorite purifier is the Steri-pen. It use UV light to kill everything even viruses, bacteria, and protozoa.