Hello,
I know that Vicks makes a cool mist model with filters. I have now gone through two Vicks humidifiers and my major complaint is that they are not very quiet. They are also not easy to clean, but I think that most of them are a hassle.
They one I have now is awesome, but it was pricey...$170.00. It's made by Air O Swiss (model 7135), and it does both warn and cool mist. I like it because is has a humidistat, and my favorite things is that it's SILENT!!! The only noise I hear is a little water trickle once in awhile. I have had it for a year and it's been great. I liked it so much that I bought one for our room as well as our son's. I know they sell the Air O Swiss brand at Bed Bath & Beyond, but I don't know if they carry this model. They do sell the filters though. You can check it out on the Air O Swiss website.
Good Luck!
A.