why don't they make the 410H chains anymore!?

now i have to buy these stupid looking "harcore" one-sided chains that wear unevenly and are supposed to be stronger...or the flimsy Z-chains that stretch after two weeks...

the 915 chain looks promising, but it's still one-sided, and will probably STILL wear unevenly.

the other problem is that now there aren't any low-cost, yet strong chains that i can use for my fixed gear bikes.