I went for Touratech panniers but use a BMW Vario top case for when I have to take my work equipment (cameras, computers, suit, shirt & tie etc.) with me on a trip. Works pretty good and I find the base plate makes an excellent rear rack when not using the top case.
"Every county of England, every country of Europe and every (part of every other inhabited) continent of the Earth" ... 83% complete!
What's left? Moldova, Ukraine, Belarus, Russia, Siberia, Eurasia, Central America, Mongolia, China, Central Asia, India, West, East, Central & Southern Africa, Australia & New Zealand.