My vitamix 750 pro is about 8 years old and it had become incredibly noisy and was less efficient. I didn't really notice how far it had declined. After figuring out it was the blade and not the bearings, i finally ordered this. I was hesitant to get this blade because it was not a Vitamix product and worried it would not work well. In fact, it was easy to install (though I did not tighten it enough on the first attempt) and it blended much better than the blade I replaced. I have no idea if this is as good as my original blade was when new, but it is working fine and the price was very good. This is what to get if you have one of the newer models (last 15 years).