Damn straight, GTX is good.
I've got an Entrant GII-XT (biggest competitor for Gore) short length jacket that was my principle rain jacket, until I was given a Ventile jacket last March for my 20th b-day. I use both, depending on the weather.
Ventile, when it's moderately rainy (it keeps my dry for 3-4 hours in the rain, but excels in high wind, and very cold)
Entrant or my previous Gore-Tex jacket when the heavens open up on me.
If I have any complaints about the above garments:
Ventile: Well, none actually, it still works as good today as the day it was built. But, the seams on the hood and shoulder are facing upwards, which usually let in about a dollar-coin sized moisture spot of moisture after about 3 hours in heavy rain. Modern ones have the seams in other places. **The Ventile parka's old, so I'll do my best to get some digital photo's taken of it, and post it here. It should bring back memories for all you oldER folks**
Entrant/Gore-Tex: All microporous fabrics are 100% completely reliant on the DWR. Once the DWR wears off, say, after 9 or 10 hours in HEAVY rain and the outer nylon face "wets out" the membrane stop's breathing. As it's bonded to the outer face, when it wets out, the layer of water doesn't allow moisture dissapation. (But, it doesn't allow leakage) So, as long as you're not sweating too much, you'll still stay dry, but....you'll get cold.
It took me a long time to realize this: There is no perfect gear. I still remember my Dad quoting these words "Adam, when the weather's like this, it's inevitable that you'll get wet. The name of the game when you're out here is to not get as wet as everbody else." I think that follows along the same lines as the brilliant SAS line "Never be the first one to fall."
My Dad's quote was coming from two years ago on an autumn hike, and one of the people became very hypothermic due to the weather. He didn't die, we got him out okay, but it was a lesson for me.
Anyway, I hope you enjoyed my morning rant on raingear.
Be Well,
Adam.