I can't do better than 2-stars as I have yet to try out the boiling ring purchased through what I presume is Hamilton Gas Appliances. Ordering and delivery were fine, but when it came to fitting the windshield to the ring, it would not fit. The Flame Failure Device (FFD) had been fitted, presumably at the factory, in such a way that the fine copper tube was positioned to stop the shield being fitted correctly. The FFD is a safety-critical device and the copper tube is an important part of the burner. It seems very poor quality control by someone to allow the burner to be sent out like that. I suspect that no one at Hamilton/Calor actually looks at the product before sending it out as that woulld mean breaking the substantial seals on the manufacturer's box and it came out of the Italian factory like that. I could simply have bent the tube out of the way, which I tried, but for starters I shouldn't have to and having some experience of gas safety, there is always the risk that any sort of manipulation could make the FFD ineffective. I raised this with customer services, but they are dreadfully slow and I am still waiting for a reply about the safety issue, so the burner remains unused. Another issue raised with them was that I needed a burner with a windshield. They do several single burner rings with windshields, a 1.5-kW burner and a 4.5-kW burner. Both state that they can be fitted with windshields, but for the 1.5-kW burner, they say a windshield is available but doesn't appear to be available for sale, so I was forced to choose the 4.5-kW burner which did have a shield for sale as an accessory. The 4.5-kW version is a bit too powerful for my purposes. I can't comment on whether the item was damaged, but it certainly wouldn't fit the the windshield designed for it. So, we have a company that on the face of it seem decent enough, but unfortunately let down by quality control issues, safety issues, poor customer service and misleading information on the items they sell.