The Mantus anchor was received, assembled and installed on my boat.
So far with its first use, I'm very happy with it. I need more time to know if it's that much better that what I had, as one use does not make the whole story. But it did grab fast and hard on its first use.
I did order the size anchor that could be considered a bit large for my boat on the lake, as I went to the larger of the two sizes recommended for my boat size.
This anchor could be considered a 'storm anchor' on the ocean. Because of this, I'm starting to refer to my new anchor as my 'battering ram'.

If you see it, you will know what I mean.
For our lake use, I'd say you could probably go safely to the smaller size that is recommended for your boat as we don't overnight while on the hook and hope the anchor will hold during a heavy storm while you are trying to sleep.
Salty Dog, thanks for turning me on to the Mantus anchor.