i tried a Ride double boa and K2 triple boa system, i like how easy they where and they never loosened up other than breaking in.
The problem i had with both is that the way the boa laces were attatched to the boot cause the boot flex to pinch my ankles which hurt a lot. They were comfortable in store and walking arround my house. but once i started riding is when they started hurting.
I have used regular lace and speedlace boots with out ever having a problem. they are a pain in the ass compared to how easy the boas are though.
im going to try the next years Flow boots out as they aren't designed like the boots i was using.
Good gear doesn't make you better; good gear makes it easier to get better