Well, we finally had a chance to try one out! Read on for our reactions... Frankly, our reaction so far is of unadulterated joy. This is a clever, well-made mixer attachment. Here's how we got to that conclusion.#1: Pick difficult mixer project. I chose a favorite recipe: plain dark chocolate cake. There are a couple reasons this was a good recipe to test this mixer blade. First off, it's a one-bowl cake. You dump all the dry ingredients together, mix them, then mix in the wet ingredients. Secondly, it's chocolate, which really lets you see when everything hasn't been mixed properly - the streaks of white are very telling! And third, I did a double batch to see how well the blade could handle large amounts. #2: Attach and mix, mix, mix. The blade attached to the mixer just like our normal blade. It twisted into place perfectly. Then I turned on the mixer and, aside from a very annoying speed issue with the KitchenAid I was using, everything went splendidly. The blade didn't scrape the bowl too closely; I didn't notice any shaking or odd noises. It was smooth and quiet. #3: Pour out batter and see a completely clean bowl. When I poured out the batter there were zero lumps, flour clump, or chunks of partially-mixed and unhydrated dough at the bottom of the bowl. Doesn't take much more than that to convince me! This recipe usually requires a lot of scraping down and remixing to get everything combined.
Conclusion: I wouldn't buy this JUST to avoid scraping down the bowl. But when you're making cakes and cookies, it's best to get the bottom of the bowl scraped as you go along. When you scrape and mix in later, it often creates a little unevenness in your batter. This is a great tool to help you get a more even texture and easier mixing. Recommended!
ETA: We found out that the fins on these Blades are not silicone as we first believed. They are actually a proprietary rubber that will not spider crack in the way that silicone often does. Also, I was using this with my mother's machine. She since used it herself and now I cannot pry it out of her hands. She was like, "What IS THIS? It is AMAZING! I cannot believe how it CREAMS!"
So, I will be buying my own version of the BeaterBlade+!
• BeaterBlade+ Official Website, with links to online vendors. A blade costs between $24.95 and $29.95 depending on the KitchenAid model it's designed to fit.
Also check out the SideSwipe Spatula Mixer Blade, a very similar product.