Keiser Koba

I used to build collars a lot, using OpenCollar, but after they took down the server, I havn't built any collars. Now I was thinking og getting into building some collars and cuffs again, and was wondering what scripts are the best ones on the market. There's quite a few on the marketplace, and they more or less have the same features, so I'm a bit lost. Who makes the best ones? I need something that's reliable, easy to use for both the wearer and the assigned "owner" and that's not too laggy. Anyone?