Calling all Scentsy users....

I've heard a lot about Scentsy products and how nice they are, etc... so I'm looking for anyone out there to tell me what they think of them... what scents are good and bad? Has anyone used the little plug-in version? Is there any pros and cons? do you like the bricks or the bars better? I'm looking for something that can just give me that nice smell throughout the house that won't be overpowering or too weak..