I read a lot about the improve of using magnetic plate.
Jamil said that he wins by 40% compared to inttermitent shaking. But as the impact on growth rate or decrease in comparison to other methods, example: simple starter or aireation continuous.
I can not find that information on the web. I read Wyest page but only said about to use stir plate or not use in his calculator (I think the other posibility is to use air pump or shaking, but I don´t know),