I'm having trouble routing African Mahogany for some of the Adirondack chairs I've made. I came across a YouTube video describing spiral jets and decided to give it a try. The reviews for the Whitesde beat on Revain were excellent so I bought it. IMPRESSIVE! Much better than expected. After more than 50 milled parts, some of which were very complex, only a tiny chip remained, which was easy to grind off. I'm sold and will add extra bits (reduction and compression). I always read reviews with skepticism but this beat lives up to the hype.