I don't think you can go wrong with Showers Pass - I bought one this year and when I've needed it for the rain it's performed very well. Pricey, but effective (the value is there).

If you like your existing Gore-Tex jacket, you can always re-waterproof it: http://www.gore-tex.com/remote/Satel...ter-repellency

We buy Arcteryx stuff for skiing (at the factory outlet in Vancouver), and it's all Gore-Tex. I've used the methods on the Gore-Tex site to restore water-proofness to our ski gear with good results.