I liked my Havocs. But, my bike doesn't have a kicker. To me, having to rely on electric socks or toe warmers is really short-sighted. If you get stuck out for a night, that stuff will stop working. The worry of frostbite is significant enough with well insulated waterproof boots, nevermind without.
Speaking of reliability, I don't like boa. I didn't have any trouble with my Havocs, but had there been another option I'd have gone with it. I found that flexing my feet around while cranking the boa definitely helped to even out the tension and get it tighter without feeling like I was going to break it.
I like those 509s, I'll probably pick up a pair of those when my Havocs are TU.
Speaking of reliability, I don't like boa. I didn't have any trouble with my Havocs, but had there been another option I'd have gone with it. I found that flexing my feet around while cranking the boa definitely helped to even out the tension and get it tighter without feeling like I was going to break it.
I like those 509s, I'll probably pick up a pair of those when my Havocs are TU.