Your summary of the S5 box art is pretty right on.

What bothers me the most about my copies is I bought them all online individually, so s1 & s2 each came with 6 slim cases, s3 & s5 are the fold out thingy (my fav), and s4 is an abnormally larger shape all together and has 3 normal sized cases. I want them all to MATCH and my OCD is almost winning out to make me buy the stupid box set, which would mean that I spent nearly $400 on QAF dvds. Ah!