I've ridden just about every type of saddle you can think of, english, western, aussie, dressage, mcClellan, and endurance being the big ones. Aussies are a good mix. I won't touch on types because there have beeen good posts on that and I ride whats available. But the deep seat , like western and dressage does allow for more comfort and control when riding, and enable longer time in saddle. The leg positioning and lack of horn, as well as cantle design is more english/dressage like and gives you closer contact to the horse, meaning you move less to cue the horse. That saves energy and means there is less chance your horse will go hard to leg and body cues. It develops your balance better because they'll feel everything. Its a forgiving saddle for beginners and still allows advanced riders to get alot out of it.