I am very pleased with my aroma stone oil 'burner'. I've been using it almost all day each day and it does a great job of diffusing the scent into the house. It is subtle but noticeable which is perfect for around the house. The unit itself is really easy to clean and doesn't get super hot, although you have to be careful where you place it because it does get a bit hot. Fantastic alternative to buying regular oil burners with their messy and expensive candles! Thanks Amphora Aromatics!!
I bought one of these from Amphora whilst studying in Bristol and it has travelled the UK with me since. It's a wonderful, safe and easy to clean diffuser - no more worrying about whether you've blown the candle out before you go out! I've (granted accidently) left it on for days at a time and it still works perfectly. Just one thing to note - if you use it a lot on a painted surface (window ledge, say) it does have a tendency to cause the paint to bubble. That said, I wouldn't hesitate to buy another if/when this one dies.
I bought one of these in summer of 2016 mostly to burn insect repelling oils and not have to worry about candle safety when I've got the windows open and a breeze blowing through the house. You still need to keep an eye on it that it doesn't 'boil dry' but it gets round candle worries well and vaporises the oils effectively - although perhaps more slowly than a traditional candle type. It's also great for air freshening oils to scent your home (try lemon and rosemary together).