Best balancer under $250

I might try the fluid filled chicom knock off. Crank dampers are NOT a place to skimp.

In no particular order I use:

Innovators West
Fluidamper
TCI Rattler

Please note that none of those uses an elastomer band or O rings. There is a great reason for that, regardless of how many of the elastomer type dampers are being used.

Chrysler spent a bunch of money testing dampers. It’s in the last engine book they published.