I use a mixture of electronic and paper, because I believe that nothing beats paper when you just have to read stuff outdoors!
So I check the series using Memory Map and GSAK, to find out the best parking spot and start point and to see the general line of the route. Then I sort the caches in GSAK so they're in the best order (they aren't always numbered in the optimum way) and print out a grid with the key details (cache size, last 4 logs, hint, D/T, last found date). I'll also print a map, although it won't get used a lot if the caches are close together. I then stick the paper list and map in a clear file pocket (just one of these cheap thin ones) and fold it into quarter size so it's easy to stick in a pocket.
Obviously I have the caches loaded onto the GPSr, and off I go. I try and manage without the paper as much as possible, but a quick glance will often be taken, to confirm which cache is next and to check the hint (which I generally look at before searching!). As the sheet is in the plastic wallet it doesn't matter how much it rains.
Any notes (trackables dropped, for instance) can be scribbled at the side of the relevant line on the grid.
