Youre an idiot.
Not only have I driven with these brands, I sold each and every one of them, holding them in my hands. Fidanza flywheels, ACT clutches, Clutchmasters, etc...Ive physically inspected each and every one of them with my own eyes and hands. Ive researched these flywheels to know what to say and how to answer questions thats customers ask me when deciding on the product that they want.
A lightweight flywheels "lightweight" properties are dependent on exactly WHERE the weight is taken from. You can have a 12lb flywheel that was incorrectly resurfaced or designed and have it make absolutely ZERO difference from that same 17lb stock flywheel. Many times manufacturers eliminate weight from the entire surface of the flywheel. Some material is needed on the clutch face area...this is where resurfacing a flywheel "too much" can become a problem, when there isnt enough material left on.
In contrast, much of the weight should be removed from the outer edge of the flywheel to maximize the reduction of inertia. Designing a flywheel with proper weight distribution to maintain durability while reducing the most intertia is critical...Fidanza and Toda both design their flywheels with this in mind.
The type of fasteners used in the flywheels are also important. Fidanza uses aerospace fasteners for example...very strong.
Ive seen all sorts of crap no-name cheap products that are just a lightweight version of a stock unit with no engineering involved, or using cheaper grade products.
See, these are all FACTS that you can use to support your argument. I just presented to you WHY one flywheel may be better than the other. I already stated I dont have much experience with the ACT flywheels, but from what Ive seen, they look good.
So we now see, my opinions arent worthless? Theyre not just from my buddies who have them. And they are based more on FACT and what Ive EXPERIENCED and LEARNED rather than just what I think I know "because I have a Fidanza and like how it revs faster." Just as you posted about Toda based on your mechanics recommendation, youre giving a recommendation based on NO experience other than word of mouth. My friend, I believe you have defined yourself as a hypocrite.
Case in point:
"The designs of them are all pretty similar" - is that based on you comparing them first hand, or an assumption?
"Im not sure how much better the Fidanza is over the ACT, but I dont think its worth the extra money" - So, based on your admitted lack of knowledge on the subject, how can you make that statement?
Should I continue?
Everything you say in a discussion has a factual basis. Anything. If there are no facts, there is no point, and there is no discussion. Any point should have facts to back it up. Did I clear that up for you?