A few weeks back I was at Sur La Table and a friend I was with spotted the "Beater blade". It looks like the beater attachment for my Kitchenaid with one added feature. Silicone Rubber spatula blades that reach out to the sides and bottom of the mixing bowl.
Could this be nirvana? Could it mean no more having to stop the beater a few times during mixing to make sure all the stuff on the sides and bottom get beat in? Did it mean I no longer needed a separate spatula to scrape the batter into the baking pan? Did it mean...?
It actually pretty much measured up to its promise and turned out to do a very nice job. As the beater rotates and spins around the bowl it scraped down every bit of the bowl and didn't miss a single bit of flour or liquid. It does squeak as it scrapes the sides at first until the liquid is incorporated. Remedy is simple give the spatula blades a dampening with the butter, oil etc., called for in the mix.
I did note that there was bits of flour along the back side (leeward side) of the blades that didn't get mixed. Not a big issue, certainly a lot better than the blade that came with the mixer.
Another nice feature is that since the blades are already contoured to your mixing bowl it is much easier to scrape out all the batter into the baking dish than a regular spatula can do. Its lack of a long handle does mean as you scrape you do get your knuckles into the batter towards the end of the filling of the baking dishes. Not a big deal just a little observation.
Worth the 9.99 I paid for it. Yes.
More deets at the Beater Blade site.