You mean that users reviews are mixed and some do not like this rigs. Of course, as they have some specifics. For example, I don't like handles (in fact, I do not like them on most rigs) and clamp that holds handles rail, it is huge.
I got a cage and the wireless monitor units about a year or so ago and have to commend the guys for great customer service.
In my case, I didn't like either item, the cage because it looks very plasticky (the pictures don't quite show it) and the wireless monitor because I just couldn't get my 16:9 output to look like 16:9 and it kept coming out somewhat squished, not quite 4:3 but squished. Their main guy, I think his name was Steve, was gracious and accepted a return for a full refund.