yep - that’s it - one of my brewing buddies gave one to me recently for my birthday. In preparation for the IPA I brewed 1.5 weeks ago, I ran 2 flasks of 2L starter side by side and I was able to run the starburst bar at about a 1/8-1/4 turn slower than the straight hex ring bar and still got a visibly similar vortex.
I would think it may help your situation, Jeff - it does seems harder to throw.
Bigger question for me, would it be quieter? I can never seem to get my stir bars to shut up.
In my case the generated noise has always been a result of the flask’s position on the stir plate. I can move the flask slightly left or right, front or back and find a sweet spot that is quieter. However, I use the dumb bell stir bars when using a gallon jug and there seems to be no sweet spot . . they stay centered just fine, but rattle up a storm . . .