I have that same wheel.
How about my anodizing turned from black to gold....... Not kidding. I just put it on the car i think last summer and drove the thing twice and parked it for build up/repair.
I went in there one day looking for a pack of smokes (i hide them from myself in my car) and holy alchemy, it was gold.
Those wheels flex about the same as most stock wheels. Honestly, it's to protect YOU from caving your chest in if you are dumb enough to not wear a belt/safety harness.
Save your money. Get a nardi/nrg combo and be happy with it.
I laughed when the miata guy had his wheel come off. He's still PULLING as he's re-attaching his wheel. Gangster. The hubs are made of melted down chinese moped heads. Well, maybe not but they just simply aren't safe. If you get a cheap wheel, ATLEAST get an expensive hub.
We are trying to help you. My ebay hub is getting ditched VERY soon since i need a q/r anyway. My bucket is hard mounted to the floor now.