Shark upright.
I have two Navigator Pro's, now. I love that I can toss the filters in the wash with mopheads and bleach, daily, to keep illness transmission down. A quick spritz with clorox anywhere in the canister after dumping, rinse, air dry.
I have one for the playroom, one for our personal space.
https://smile.amazon.com/Shark-Navig...gateway&sr=8-4
I buy the replacement filters listed below the image at amazon about once per year. I cycle 3 sets at a time. I also toss a dryer sheet between them each day to fresen the room air.
