Ridden the Vans Aura for the last 3 seasons, 2 pairs a year in fact, and never had an issue with the BOA system, just the boot s go too soft on me, and then i buy new ones.
This year i have the Vans and a pair of Burton IONS...
Gotta say, i love the speed laces, but it may just be the boots that make them easy, as they are a stiff boot, so i don;t need to lace as tight, which makes them far more comfortable for "me"...!!!
It is all about personal preference, i have both in the car anyway, and just put on which ever i pick up 1st at the moment...
No real preference right now, although if i HAD to choose, then the IONS would win because they are better in the park etc...
Height 5"11, Weight 200-210lbs, Born 1969
Regular Stance, Ability NOT GOOD
2102/13 114 days
K2 Jibpan 153, K2 Fastplant 154, Ride DH2 158, Endeavour Vice 155