Are you looking for just panniers, or would you get something if it could carry more?

I have this one - http://topeak.com/products/Bags/MTXTrunkBagEXP

I think it will easily hold all you are carrying. The only thing I don't like about it is the strap it came with. That strap is/was pathetic. It is to short. Topeak sells a rain cover for their bags, I think you have to purchase it separately.