I have been wearing the ABS 30 for several years now and while I cant speak for how it works (knock on wood wont have too) I can say that if I was looking again to buy, the fact that they do have a 100% track record, well except for the one guy who didnt pull his handle, is where I would lean to getting the ABS pack. Very leary of buying the first of a new thing that I may have to put my life on the line for to find out they missed something in development.
Obviously the odds of something being wrong with the new one are pretty slim but.... I'm personally just not willing.
The upside I see with the new one is it is a bit lighter, that would be nice. Could be just the fact that I load my ABS up with a zillion pairs of dry gloves and my probe and shovel (dont believe in storing these in the sled cause if it got buried, well you know what would happen then to any buddies that are buried) so it always seems to weigh a lot.
As to the cost of refill as sled fiend mentioned, is $80 for your life worth it??? Guessing it is. Same goes for buying one of these packs, I'd easily drop $1G on my sled, truck, gsxr thou, you name any toy I have and I spend like there's no tomorrow so to spend $1000, or $1250 for the chance of saving my life and going home that day to my wife,,,, it's not even a question really, everyone should have one just for the increased odds you have. A good friend was taken by an avy and he didnt have one of these, would it have helped, dont know but I am now not willing to take the extra chance of not having one now. Good on ya for not worrying about the $$ for your life and taking the first step.
Point on this is cost shouldn't even be a factor really, go with what your comfortable with. In my mind the decision is between new to market or field proven.
-I can make it by with the few extra pounds.
-Bags out the sides or bags around your head, either really better??? Many victims recieve deadly trauma from getting dragged over debris on the way down. So maybe in theory having your head higher in the snow (from bag around your head) would be a positive thing.
-I know the ABS is quality made, several years with zero rips, etc.
-Either one you get, pull the cord before each season to test it out for no leaks
I'd go ABS again though for now.