Clothing - Waterproofs
We hate waterproof layers. They are supposed to be waterproof to keep the rain out. They are supposed to be breathable to let the condensation out. None of the ones we have tried do either 100 percent effectively.
The first year we had Berghaus Paclite, Gortex jackets and trousers. In heavy rain they made us far too hot, we still got wet both from sweat and seepage, and they rustle noisily.
For year two we tried cheap, chain store cagoules but they were not completely waterproof and we still got soaked.
This year we are trying ponchos for the first time. They are made by Agu and so far have been very successful. They are slightly heavier than jacket and trousers as there is more fabric. We have yet to try them in torrential rain but for light showers they keep you dry and because there is plenty of airflow you don't get too hot. Because the front covers the handlebars your hands are kept dry and don't get so cold. The only downside is the flapping fabric going downhill but overall they're the best solution we've found so far.
Both of us use Sealskinz for waterproof socks. They are OK until the rain runs down your legs and eventually penetrates the inside of the sock. They then have the reverse effect and keep you feet wet and cold.
Skull caps, more for cold than wet weather we each have Endura skull caps that fit under our helmets.