I LOVE my County. My mare was very back sore when I got her. I did splurge on a saddle made just for her, but I don't regret a single penny! County's are wool flocked and come in a variety of tree sizes and shapes. If you have a tight budget invest in having a qualified fitter come see your horse, even if you can't buy new any reputable fitter will help you look.
I would highly recommend Black Country. They have a great variety of blocks and seats to choose from. They are custom made but not outrageously expensive and have always fit me and my horses perfectly. They are also easily reflocked ( the saddle fitter comes to you, looks at it on your horse and fixes it in like 20 mins) so if your horse changes weight or you get a new horse you don't have to get a new saddle.