That said, for your use I think it's fair to say that the best choice is the one that you think has the best design. The PUR Guide Filter ($70) has a cushioned T-style handle, and a hose that can be stuck down the open end of a bottle or attached to a threaded bottle adapter. The MSR MiniWorks ($70) has a pump handle like an old-style water pump, which I've always thought was more ergonomic than the up-and-down style used by other designs. And the water bottle attaches directly to the bottom of the pump (hose feed optional). Both filters have a pretty good field-maintenance record and are easy to work with.
So, try to get to a store that will let you fill a few water bottles with each model. Whichever one seems most convenient, buy it.