the whole rain gear thing is very painful. You either get wet from sweating and no ventilation or you get wet because gore-tex is not water proof. (yes the membrane goes both ways). I ride with a g-tex jacket and rubber pants (hardware store cheapes) I put some plastic bags and elastics over my shoes and stay reasoneable dry on my 6 mile commute. Of course you can't ride fast couse you will get hot and anythign longer than 6 miles will get me damp regardless. The gore-tex jacket can only handle about 30 min of rain and then it starts seeping through.

The one thing I am going to buy next is a rain cape and spats. Oldschool stuff but since these are open in the bottom it will get you all the ventilation and since I ride with fenders in the rain it is no issue. Carradice makes some nice ones but they are pricey as hell.