I'm an Aussie & the Australian stock saddle is an extremly comforable saddle. It has to be our Jackaroo's / Jillaroo's (Cowboys / Cowgirls as you call them in the US) can be in the saddle mustering for days at a time. The Australian stock saddle is sturdy, comforable & more importantly safe!
Have you ever seen an iconic Australian movie called Man from Snowy River?? All saddles used in that movie are... you guessed it Australian Stock Saddles.
Depending on your particular needs the Aussie stock saddle can either come with or without a horn or a braided leather attachment for the less confident rider.
Like with any saddle you get what you pay for so be mindful of this when purchasing...only buy from a reputable saddler, you can't go much wrong with a Bates Aussie Stock saddle or the famous & in my opinion the best of the bunch...the one & only Syd Hill Stock Saddle.
There are some Aussie Saddlers like the one in this link that also sell in the US have a look at them for a basic overview of the saddle...but be warned, once you go an Aussie made saddle you will never want to change styles ever again.
Make sure you get a saddle with the correct fitting gullet or a removeable one so that your horse will feel just as comfortable. Information about Australian Saddles and Tack
All the best with your saddle hunting.