**Please note that you should ALWAYS consult with a professional before buying & using a saddle on a horse. If you have the right style of saddle, it is NO GOOD to you or your horse if it doesn't fit correctly. It could result in serious injury to you & your horse. PLEASE be careful.**
Trail Saddle-

If you are looking to do a lot of trail riding, this is the saddle for you. Trail saddles come in many different styles and colours and can be found for a variety of different prices. A trail saddle is often designed with a low cantle (for comfort) but it sometimes made with a high cantle (for protection.) A comfortable seat is also popular in trail saddles. Lastly, most trail saddles will be equipped with leather ties for all your gear.
All Around Saddle-

All Around Saddles are made for the riders that do more than one thing. They can be used for things like trail riding, roping & even barrel racing, but this saddle is typically made for everyday riding & schooling. It has a very close-contact seat & a very high, strong horn. The skirt is also close-contact to make leg cues easier.
Barrel Racing Saddle-

Barrel Racing saddles are made for; you guessed it-Barrel racing! If you are not looking to do a lot of barrel racing, this is probably not the saddle for you. Although it can be used for other things, it's probably not the best choice. It has a high cantle & deep seat to keep you in place. The horn is also very high/strong since it is something that is typically used a lot in barrel racing.