Hi,
This is a matter of personal taste. I can tell you that most people choose strap bindings over step-ins. I am not saying that step-ins are bad, but there may be a reason for that. Check out some online shops http://www.frostyrider.com/shops/online_shops.htm for my favorite bindings which are Flow (hybrid), Burton Strap and step-in, and Technine (Strap).
Pizzoouut!
Frost-o-matic