The difference between the elite and extreme is the sides of the holder. The extreme has taller, straight up sides where the elites are on an angle. I troll with my rods 90* out the side of my boat and have yet to have a rod get pulled out of the holder. The elite will allow them to twist. I’ve had both and never lost a rod out of either but find the extreme to be more secure. All adjustments are done with a half inch wrench so I keep a box end in the boat. The millennium have knobs for some or all of the adjustments. I bought knobs for some of my hi teks a few years back and took them off. I found that given the chance the knobs got in the way and line got wrapped around them, which never happens with the bolts. I’ve used about every type holder made and between the quality of the product and the customer service, I’ll never use any others.
Creativity is just intelligence fooling around