Frogg Toggs are cheap and will keep you dry. They do not seem to hold up as well as some of the gore-tex products. I saw Frogg Toggs on sale at Cabalas yesterday. With that said, I believe that raingear is the one area you need to spend the money and get top of the line product. It is very possible that you may spend your entire trip wearing your raingear and you cannot have it fail on day 3 of a 10 day trip. I use Marmot's stuff but have had great luck with North Face and Archteryx in the past. Many on here use some of Cabala's or Bass Pro's gore-tex product. Go to a shop where you can see and try on the product. Bottom Line: Frogg Toggs will work but may not hold up trip after trip.
"With an ax, you can build a life. With a stove, you can boil water. That is if nothing breaks and you don't run out of fuel." -Samuel Hearne
I agree with the last post. Get rain gear that will keep you dry over the long haul. REI has a good selection - including their own brand which tends to be priced better than North Face and other major brands.
Do not let the behavior of others destroy your inner peace. Dalai Lama
Not sure which "Gore Tex" stuff you are comparing the Frog Togs to, or if you are using "Gore Tex to universally represent waterproof and breathable, but my coat and pants from Patagonia are amazingly lightweight, durable, and comfortable. I wore non-breathable years ago, but will never go back. Being able to get rid of perspiration is a must, especially during a rain storm in an extremely humid environment.
Last year I bit the bullet and bought the Cabelas Paclite GoreTex jacket/pants set and don't regret it one bit. My friend brought Frogg Toggs and basically the first time we went off the beaten path in search of wood he ripped a leg wide open on a snag. I know I spent more but am happy and should have a rainsuit that lasts quite a while.