Heading Sensors

[Last One]

Looking for some help on heading sensors.

Adding 18" Fantom radar to my boat this year for help with the fog.

Motion scope looks like it will be great to see other boats.

Not sure which heading sensor will work, Staedycast for $140 or Axion 9 $650?

Would like to use the Steadycast but don't want to waste money.

Also not sure if maybe Airman has one which will work.
Thank you in advance

[hard knox]

I just run my furuno in heads up mode and make sure to set up orientation properly. It's pretty simple to tell where the vessel is coming from especially if you put trals on .