Do not get the DC Allegiance boots. Made like crap. I went through two pairs both on warranty return. DC's quality is not great. I'd only recommend buying that boot if it's the only one that fits your foot.
K2, Vans, Celsius (I think they still have BOA), and others have the Dual BOA (focus) system and are good quality boots. K2 has the model that in addition to the BOA focus system has a BOA liner. So three knobs. It seems like a bit much, but after checking them out, they are pretty slick. If those suckers fit my foot, that'll probably be the next boot I get. I have yet to find a quick lace liner that stays locked down. The BOA system should fix that.