We have been using older water filter bottles with charcoal filters. These are easy to drink from a combination of squeeze the bottle and suck will quickly fill your mouth with a swallow of water.
We are planning to upgrade to sub-micron pore filter bottles. After much research it seems like the two midrange dominate products are the Sawyer (0.1 micron) & Lifestraw (0.2 micron), both have a product that incorporates their filter into their purpose build bottle.
Depending on who you ask and what you believe they both have either vastly different or nearly the same, life expectancy and filtering ability. Leaving that aside and just focusing on getting the water from the bottle, through the filter and into your mouth; are there significant differences?
The difference between 0.1 microns and 0.2 microns is double (or half) what impact does it have on being able to get the water through?
P.S. In most cases we have pre-filtered the water with a Camco 20 micron filter, into the fresh water tank of the camper. Or we are using tap water from our local municipality.