I have tried Bath & Body Works oil warmers and Air Wick oil plugins, and by far, I believe Glade has the best. I notice the Glade plug-ins scent last longer , than the other brands. Each warmer starts off great for the first week. But by the second and third week the other two plug-ins you can barely smell them. The Glade oil warmers are still going strong by the third and fourth week. I have them throughout my house, in each bedroom, bathroom, and in the living-room. I feel I get my monies worth with these oil plug-ins. Each fragrance is really nice, I really can't say which one is my favorite. I also like the fact it seems I can always find coupons for these oil plugins, as well as frequent sales. I try to stock-up on them when they do go on sale. I also like the fact you can control the amount of scent you would like on the Glade plugin. I start off with the lowest setting, and as the weeks progress, I adjust the settings for more fragrance. There are more than several oil scented fragrances to choose from as well. Glade is also makes seasonal oil fragrances too, new scents for the spring, fall, and holiday scents as well. I would like to add also, there are two Glade warmer holders- 1. has a fan- this one gives more fragrance. The second one is just a warmer, which gives a milder fragrance. I prefer the fan version, I like walking into a room with a nice aroma.