I have tried them all. I really like HDR - looks nice for the show ring, comfy seat, fit my horse really well. Wintec - exceptional quality for a synthetic saddle, comfortable and durable. Thorogood - Avoid this saddle. I HATE the seat and the riding position it put me in, and it didn't fit my horse very well. I hear they fit wide horses better.
If you are looking for a low maintenence saddle, one that I absolutely love is the courbetter magic. Courbette Sadddlery Company, Inc. Magic
It is actually made of leather, but the leather is treated in such a way to make it totally waterproof. It will not accept oil, no oiling needed, and to clean it you use soap and water like a wintec. It's also very light weight. I don't know what your price range is, but I prefer the magic over the wintec. If you have an average size horse and not exceptionally narrow or exceptionally wide, the magic has an "e-motion" tree which adjusts and gives to your horse. It fit my thoroughbred who needs a standard tree, and also my fat little no-wither appaloosa who needs a xtra wide tree. Courbette is one of my favorite brands, I feel really secure and correct in a courbette.