Yea I've heard that the RS breaks very easily and even if it doesn't snap in half, the blade starts to chip off piece by piece. Alot of NHLers use the RS but I guess they have the luxury of not having to buy sticks. Also, when holding the stick it felt very blade heavy. So aside from durability issues its a sick piece of equipment.
On the other hand the APX is by far the lightest stick I've ever held, my buddy bought it and let me mess around with it at a shinny game and it feels the puck very well, its supposed to have two kick points one in the middle one down low for clappers and snapshots/wrist shots respectively, and I noticed a lot more speed on my shots. According to what I've read and the testaments of my friends its quite durable and can take some vicious slashes with no paint loss. So if I had the choice I'd get the APX.
For me, when buying a stick that costs as much as these two do durability is key.
My kid (Bantam Minor Tier 1 Forward) wouldn't shut up about the APX, so I did a little research and thought it looked like it suited him well. We bought it and he is lighting them up in the week since.
7 goals in the last week and every time he comes off the ice he still can't shut up about how much he loves it.
Not that I am an expert by any means, but my kid and all his Tier 1 buddies pine for this stick. (Personally I think there is a bit of a placebo effect involved, if the RS was the stick hyped by all his friends and he got it, he would still be lighting the lamp). He got a decent confidence boost by rocking a great stick, so in turn he has been paying great.