Flexy rack threaded rod material


It seems that brass is the universally accepted "best" material for the threaded rods of a flexy rack, but has anyone actually compared brass rod to any other material in a flexy rack in the same room and in the same system? I'm having a little problem shelling out 3x the money for something that is supposed to be better even though no scientific proof exists (or maybe it does, I just haven't found it).
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Theaudiotweak,

I bet Geoffkait can help you as I'm sure he probably cryos many of the products that he sells (the Super Intelligent Chip, the Signature Version of the Clever Little Cock, the Brilliant Pebbles, the Tru-Tone Duplex Covers, and the Special Helical Springs, to name a few). I bet every cryo lab in the country knows his name due to the sheer volume of items that he cryos. Mention him and you may even get a discount!
Tom6897: Refreshingly stated reality. (I like this guy already!)

Geoffkait: As expected!
I agree with Tom6897. I have done the Flexy. Its simple design encourages upgrades and tweeking. Unfortunately it is not a good design and is ironically beyond improving with "upgrades" like brass rods. Ikea's lack table is much better, although I am not completely sure they are made the same way. They are cheap enough to buy one for experimentation. If you flexy, don't use MDF. It sounds bad, period.