I have used a Rico Royal M7 Metalite with an Olds Parisienne for a number of years and had no reason to go to another even though I do have a couple other hard rubber mouthpieces. I traded the Olds and bought an overhauled King Zephyr big bell bari. With two completely different designs I have had great results with the Metalite. This has always been my main bari mouthpiece. It is easy to blow and gives a huge fat punchy sound. I use Rico Royal 2 1/2 reeds and a standard tenor sax ligature. I don't think you can go wrong with the Metalite. Check out the Metalite thread.