Blow proof bells

I'd take that 12 lb $600 center force flywheel over that 35 plus lb 440'sRus piece all day long...I had a customers son bring a whole crap load of that 440'sRus stuff to the shop..half of it we didn't use.That flywheel we use to hold the back door open on windy days..There's NOTHING wrong with the factory forged wheel plus it's 10 lb's lighter than that flywheel the young kid got from 440'sRus.
The only flywheel that I've ever seen that was heavier was the old Direct Connection Hemi steel wheel at 130 tooth/45 lbs.
Light=early tq curve

the add is saying 27 Lbs. Is that all that bad? I don't know. I know the aluminum ones are keeping the rotating weight down, and should rev up quicker, and free up more H.P. I have also heard the heavier flywheels in motion, don't drop the r.p.m.'s as quicker between shifts. This is what i have heard, don't know what is right. Would an extra $500. put in a different part of the car make more h.p for us that can't afford a $600. flywheel, or is this $ well spent.

Thanks for any info.
I appreciate it.
T.J.