I was looking at the Bad Dog mini bike kits-I noticed that they are noticeably more expensive than,say,an Azusa kit. Are the Bad Dog kits bigger than an Azusa? They kind of look to be a copy,only bigger. I have heard a lot of good reviews about the company as far as customer service. But if they're just an exact copy of an Azusa,and the same size,then what's the point?