273 - 273 Commando

OK.
I heard back from Egge.
Cast piston and pin set - $340.00
Rings $62.25

Or I can go with a forged piston from Flatlanders.
Forged piston and pins - $749

So what will the extra $400 for forged pistons do for me?
If I go cast should I get everything balanced?

Thanks again.