What brand BIAB bag do you use?

[Gravelscratcher]

I siphon into/through a muslin bag (in the keg).
I've tried both ends of the siphon... the hose end (in the keg) is the only way it really works. Otherwise, you leave too much beer in your fermenter.

 

[Apple_Jacker]

That is what I have done it the past but recently someone here pointed out that I could put it on the outlet as well. I think I'll try that next time I need it.

That may be even easier; it would definitely be easier to clear out clogs without stirring up the beer.