Peter Storm gear is quite good if you want breathable gear.
I almost died from hypothermia in 1978 while spring brown bear hunting down on the Alaska Peninsula wearing the first revision of GoreTex. To say it was worthless is a gross understatement. I have never trusted it since. If you want a great ski suit to keep slight moisture off your body while skiing in a very dry climate, GoreTex is your fabric of choice. If you are going to be wearing a pack, sitting on wet ground, getting your rain gear dirty (and thereby from all those activities ruining the "breathing" properties of GoreTex) then you will be SORELY disappointed in anything made by W.L. Gore.
Dave2old is correct - if you are working hard inside of raingear you're going to be almost as wet inside as if you weren't wearing any at all. If you're climbing in raingear and it's raining you're going to be wet, whether or not you're wearing anything made or licensed by W.L.Gore or if you're wearing a plastic trash bag. Even "breathable" gear can't breath if the moisture level outside of the rain gear can't facilitate the evaporation of moisture from within.
John