Yep hunt around, see what good second hand deals you can pick up around the place. What saddle you get depends on what YOU like not what other people like, for instance, I HATE isabelles, I feel like I'm being forced into a position and trapped there, they swing my lower legs back and tip me forward (and usually I have the opposite problem!)... but some people love them!! Up to the individual.
I'd go out to your local saddlery and see if you can try out as many saddles as you possibly can, even if they're not in your price range, at least you'll get to have a feel of what you like and what you don't. Also, some saddles will just NOT fit certain horses, my old QH x appy mare had lower withers and not much shoulder, and I found that everything other than an ancient wintec slid up onto her shoulders.