Frogg Toggs are light, and will keep you relatively dry in most rainy conditions you would hunt... You will get wet in a down-poor, and my experience with them is that they are very light-weight, but not very durable. I consider them disposable rain gear. Never had a set make it through a whole waterfowl season intact.
Were I hunting Arizona, Frogg Toggs might be a good choice. For Oregon, not so much.
I would far rather have good clothing than a fancy gun... Good boots are a priority, and in the rain, a good rain coat makes the difference between being comfortable (and enjoyment) to being wet and uncomfortable. As stated above, Kuiu, Sitka and First Lite all have a good reputation (and I can personally speak to Kuiu and Sitka).
I hunt in the rain enough (primarily waterfowl) that good raingear is a good investment. I use that same gear for fishing, waterfowl, turkey, and any time I am going to be outside in wet weather... Probably a dozen times a year.
