ive seen the orange one before. You'll see alot of the yellow kind. A bunch of companies make them. Their knock offs of the megatech one. What sucks about them is the pitch of the motor is manual. In other words you just angle them the way you want them then put the sub in the water. While its in the water the only way to chance the pitch is to stick you hand in there and adjust it yourself. I wish it was controlled from the controller but the cost would skyrocket and it would be very complicated. Plus it would have to be bigger and that would defeat the purpose. I dont know how much that one in the picture is but you can get ones just like that from toyeast for like 8 bucks. dont know how good they work though.