Got the Otterbox case today. It's a bit complex isn't it? I notice the screen protector likes to attract dust underneath it which is not so good. The case is hefty and has the silicone type inset around it which on the one hand gives it alot of bump and presumably light splash protection. However it is a lot bulkier than the Seido case. Accessibility to the trackball is better than the Seido.

All in all I give the Otterbox a 4 out of 5. I give the Seido a 4.5 out of 5 simply because it is sleek and has the smallest bulk factor to it while still giving you scuff protection and grip. Maybe if I were on a kayaking trip or worked in a wet environment I would feel differently but for normal life the Seido is terrific.