I have a 2nd gen SX as well. I read all of the horror stories about back lashes, but I know how to set up my reel so no issues for me. It's a great reel, and I don't think the Gen 3 will be nearly as good.

I just cant see throwing down the money for a magnetic break reel. If you want an upgrade off the Revo S, the STX is only 30 dollars more than the SX. I cant back lash mine to save my life.

My next one is gonna be the Revo S, but that new STX is looking awesome. If I get a back lash, it's during the cast not the landing, so centrifugal would be the way to go for me. The new STX has the best of both worlds, and might be worth the extra $70.