Their product is nice, but I'm waiting for it to improve. It isn't so much the functionality, but the quality of iBeacon itself. It rattles if you shake it, unlike any other Beacons we've tested. There isn't much weight to it and there is tons a wasted space. I know these things shouldn't be heavy, but they should feel like a nice product. I'd prefer not to be locked into their system, but I understand why they do it. My company has just preferred working with Accent Systems, but if Kontakt becomes less restrictive then we would reconsider them.