Replying to Salomon STH2 or Tyrolia Attack 13?

I would generally opt for the Attacks because they're tried and true, but the sth's are much cheaper and I've also heard good things about them. I've heard they're heavy, though, and that doesn't sound too good considering I'd be mounting them on >2300g skis. I also heard they mess with the flex points on your skis because of their size. I really have to save money rn so if the sth's won't make my experience bad, I'll take those, but I'm iffy on them bc of their weight. Would it be worth it to buy the STH's or shell out for the Attacks?