I have owned two, first was the 8-21 and current is the 10-17. My thinking when buying the first 8-21 was I didn’t need the 12-33, figured I would never extend out to the 33 and didn’t want a 12 stab when collapsed. Although the 12-33 seems to be there more popular model. The 8-21 was nice because when collapsed it was still a compact stabilizer but could extend to the 21 which noticeably slowed my pin movement. I did notice I was rarely ever extending out all the way and would only ever be at about 12-16 inches out. I then sold the 8-21 and purchased the 10-17 and like it much better. For me I like the fact there is only one adjustment twist lock on the 10-17, less components to fail and overall a lighter stab. For me I keep it collapsed at the 10 which acts exactly like any other 10 stab and doesn’t get in the way, however if time allows for a longer shot I can adjust only one twist lock and pull all the way out and still not have an overly cumbersome setup. I attached a Limbsaver broadband stabilizer enhancer on the end for additional vibration reduction. The crossover stabs come with 3, 1oz weights, I take one off and run 2, 1 oz weights with the limbsaver weighing about 1.5 ounces, giving me a total of 3.5 oz in front weight. This setup works really well for me. Stabilizers have always been one of the things I tinker a lot with, have had bee stinger hunter, AAE western hunter, spider archery and bowfinger. Although most of those options serve better as a designated stabilizer I really like the adjustability of the crossover.