I make 1000 - 1800 gram batches in an 8-cup Pyrex -- works well for putting in an ice water bath for a quick cool down, before and after adding preservative. Then I pour into a gallon ZipLoc bag.
Ahead of time, I set the bag into a re-purposed one-and-a-half gallon empty white vinegar bottle. I turn the top of the ZipLoc down over the rim of the bottle -- high tech, I know. LOL Fits perfectly. I have other similar re-purposed containers to hold quart-size ZipLocs for smaller batches. I zip it up, leaving an opening for condensation to escape, and allow it to cool to room temp for about an hour before bottling up. I carefully snip the corner so the opening isn't too big, and squeeze.
I think it's all about finding what works best for you. For me, I've been doing it this way for so long, I can't imagine using anything other than the ZipLocs. Cost effective, environmentally conscious, quick and easy, with no mess to clean up. I wash the ZipLoc and reuse it (NOT for lotion tho. haha)