Hey NS. I know there probably wont be a ton of reviews on these two bindings, but I've been thinking of investing in a touring setup in the near future, and have been considering the 4frnt adrenaline and Salomon guardian. Specifically, which one is lighter, which one has greater retention/elasticity, which one has a lower stack height, and yeah just general reviews on each of them (downhill performance vs uphill performance, etc). I'm 5'11" 140 lbs and plan on throwing these on either a pair of hojis, renegades, or billy goats, but you probably wont need to know that to tell me the stats on each of them. I've been able to find a good deal of info on the guardian, but there isn't too much around on the adrenaline....
Thanks,
Isak