This should be a FAQ or sticky by now, but I'll bite anyhow.

I go with a Showers Pass Touring jacket. As my commute is only 10 miles, I don't worry about rain pants. If it's raining and cool, I'll wear tights, and push a bit to (a) stay warm and (b) get there faster.

I've also used Performance Century jackets until I wore them out. They worked well, but the SP is a step up.

I look for things like a two-way front zipper, pit zips, a comfortable collar, and adjustable wrist closure (or elastic that's not tight), and a liner of some sort. Rubber or plastic against my skin gives me creeps.