Is this correct?

The following was posted on http://www.earlyabodyforum.com:

"Well, the only experience I've had with forged pistons is that they make the engine sound like a diesel when its cold. They rattle around in the bore 'til they expand out as they warm up. Unless you race, or generally "beat-the-snot" out of the engine all the time, I think forged pistons are a waste of money. Hyperuetectic's are a great compromise of strength and economy. Assembled correctly ,for regular driving, and the occasional "Chevy-destroyer" blast, cast pistons are just fine."

I have three questions:
**Are forged pistons noisy?
**Are forged pistons worth it?
**Do 273 Commando motors have forged or cast pistons?