I liked the Fallis saddle I got for my mother to ride in, but the seat was too big for me, 16". The stirrups were underneath me, easy to move forward or back, didn’t get hung up on anything while using your legs on the horse. The flat seat is SUPPOSED to let you move for comfort, so you legs keep hanging down under your body in proper position.
I absolutely hate an Equitation seat that FORCES me into a position, doesn’t let me move or adjust my body while out riding. Might be just the thing for shows, but NOT good for long rides, or all-day in the saddle. There is a reason the Equitation seat came into use in the mid-70s, then went away again! Might be helpful for a little kid riding, but not for an experienced rider doing mileage with their horse.
Also don’t care for the high-backed cantle being seen so much now. Too much of a “locked-in” feeling, again preventing my moving inside the saddle seat. OK for short time spent barrel racing, but not what I want for my horse riding. Also can require you to need a bigger seat on saddle, since you have no room to move pushed against that tall cantle.
Fallis is kind of fallen from favor in being “stylish”, but does make good saddles that are comfortable to use and ride in all day long. Does take more than one ride to get used to how it feels and how you can use your legs so differently than most Western saddles allow. Just get a seat that fits you, which is strongly suggested with any saddle. With no build-up in front, a 15" seat has a LOT of room to sit in. You can position yourself as needed for good basic seat alignment. Most guys love riding in Fallis saddles for that flat seat.