The BeFree is rapidly becoming the new go-to standard amongst the stateside ultralight cognoscenti. There is no comparison, it is just plain superior to the Sawyers.
I'm a fan of the Befree it works well
I can't imagine using it for my main water filter though.
Being a small bottle helps, i can fill up the bottle at a stream then sip away.
Easy and no real hassle
To use it for my main filter it's a ball ache though.
You need to buy a larger Hydrapak bladder
This bladder is not as though as say a Evernew or Platypus, it's a pretty brand specific thread used as well so it's not like you can use any bladder.
The hole is still pretty small, so you'll need a scoop of some kind, just like the sawyer
The filter used on the BeeFree doesn't lend itself to gravity filtering well.
When new it drips pretty well being hung upside down, but add a cap with a tube and it slows down significantly.
As by design the bladder is submerged into untreated water, you'll need some sort of sealing cap and tube overwise as soon as you turn it upside down untreated water will drip into your "clean" bladder
Personally i'm happy i took my trailshot, i used it for my camp water and used the befree for water on-the-go
I will do the same the next trip
Your hand does get a bit achey filtering 2 litres and over, with the trailshot, but not having to faff about with scoops and dirty water containers outweighs that for me.