Even some of the companies that carry other fabrics will admit nothing compares to GoreTex, but after 6-8 years of heavy use even the best GoreTex seems to go porous and start leakin gin hevy weather. I've been through this 3-4 times over the last 20 years, the Extreme Wet Weather warranty and all are nice--but sooner or later the stuff sadly fails.
GREAT for the first five years, though.
In humid hot summer months, GoreTex is the only way to survive. In more reasonable weather, I caught some Henry Lloyd gear on sale at the end of season and swear by it. You can pick up raingear from camping and hunting suppliers for a fraction of the "marine" price, but it is harder to find it in "safety" colors that are easy to spot in you go overboard.
Whatever you wind up going for--fit is paramount. Especially, a good collar and hood to keep rain out, and wrist seals of some type. With pants, you are best off with bibs of some type, so that breaking water can't sneak up under your jacket and over low pants.
REI, Campmore, Sierra Trading, all are good camping sources.