The Tamiya DF-02 is known for weak shock towers.
I have used the same set of Yeah racing alloy towers for three years. Yes they have bent, but I have been able to straighten them.
Think about the application read the forums and decide for yourself if Alloy is better or not for what you need, I don't think there is one right answer......
I have also made some custom parts from alloy sheet including shock tower braces for a tl-01B, a wing mount for DF-02, steering parts, RX brackets and antennae mounts. For me this is another part of the hobby which I enjoy and can do when its raining, dark or both
.
Just my observations.........
Hedgie