Big zip as the main dirty water bag with an inline filter and a 2 liter bottle bag for camp storage. The sawyer and platypus inline filters work well.
You don't need to get the platypus system. Save money by getting pieces and then cut the tube to install the filter.
Thanks everyone. Was maybe wanting a 4L but purchased the Big Zip on sale at REI.
The big zip is easy to fill and seemed to be enough water for me each day, although I wouldn't have minded having more back at camp.
I did not like the Sawyer filter at first at all using as a squeeze filter. Then this year I ran the Platy big zip with Sawyer filter for my dirty bag setup and liked things better. But still found the system cumbersome and not ideal, particularly in freezing temps when I had to have the filter in my cargo pocket in ziploc bags. I don't really care for dipping the big zip and only getting it partially full and then also the bladder is covered with cold water that gets all over you if you plan on doing a quicker squeeze filter job instead of waiting for gravity. So, I used a 1 Liter Platypus bag with the top 1/3 or so cut off as a scoop per recommendations on this site in order to fill the dirty water bladder and this worked much better in my opinion.
But next year, I think I will finally have a system I can deal with all year long. Will see how it works...the plan is having my clean bladder as my old standby 4 L Hydromedary without quick connects at this point because I don't find it much of problem getting this out of my pack through the front side of the Timberline standard lid. But my dirty bladder is going to be a regular MSR dromedary 6-10 liter bag with a quick connect at the end of the tube that will attach to a Mini-Sawyer filter.
This will allow me to easily remove the Sawyer mini filter and put it into my cargo pocket in cold weather. I will also continue to bring my MSR bladder small black dispensing caps, so I can use these to drink straight from the clean bladder if the tube is freezing...and also this will allow me to drain my dirty bladder tube of water after each use if necessary. I will also be able to drink right from the end of the mini-Sawyer filter when attached to my dirty Dromedary. It all works in the house. Now to get out in the cold weather to try the new system.