I have purchased Cannons, Big Jon's, and Scotty's in the last 5 years.
I ran cannons from 1982 until 2010 when I purchased brand new top of the line DT's. I installed them early July and they did not work correctly. I called the manufacturer, their solution was for me to send them to them and they would have them back to me after Labor Day! I explained that I needed the equipment to operate 60 charters before then and they expressed that was I problem I would have to handle.
I did so by replacing them with Big Jon's but they could not hold up to my fishing demands, the company was very supportive.
While I don't like the looks of Scotty's, they are great riggers; fast, durable and efficient with very few problems, responsive customer service. I recommend them without reservation.
The above comments represent the experience I have had, agree with above posts. What you are buying is the backing of the company.....15 years ago that was a no brainier and IMO it is as well today, but not the same company.