It depends on what you prefer and what fits your horse, honestly. I would first figure out if you prefer a close contact/jumping saddle or a dressage saddle... they're pretty night and day.
Are you in an area where a saddle fitter can come out and find what fits your horse and fits you? If so, I suggest that. If not, start researching and borrowing saddles to try on your horse to see what fits and what doesn't fit. Some brands in that price range to try would be M. Toulouse, Bates, Pessoa, Collegiate, Circuit, Ovation, Wintec, Thorowgood, HdR... to name just a few. Plus in that price range you could find some very nice used saddles.
This forum is a great place to do some research on saddles. Plus, if you find a model you are interested in, a simple Internet search will often yield some results.