Comparing trident models

I own three of the Tridents. MGX, Helix and Eupho. I love them all. I don't have the balls to try the Maximus yet, but would consider in the future if I'm feeling bold ;). I'm sure others will have better input than me, but for me, the main difference is the feeling of fullness. My MGX is largest, so I'll use it when I am craving something a little bigger. The Eupho is the smallest width and provides the most movement. It took me at least 6 or so sessions to really learn it though. It almost felt as if there was nothing inserted at first, especially when compared to the MGX. While there may be a learning curve with the Eupho, it is definitely worth the practice and patience. All three are amazing and I literally can't pick my favorite!