How much leverage do you need? Lower yoke = more, higher yoke = less.

Rain and snow, really hard brake pads, and rolled steel rims require more leverage. The wide problem solvers yokes help with rear brake clearance on small frames where more leverage is needed. It may also come it handy for the fork mounted cable stop. Straddle cables are cheap enough that I start with a 90° angle and go higher if I get fork shudder, lower if the brakes feel spongy. I usually get them dialed in mashing up and otherwise compromising one straddle cable and then replace it with a new one once I know how long I want it.

The best part of cantilevers is their adjustability. The worst part about cantilevers is mechanics and riders without the patience or know how to adjust them properly.