The best 4s out them all was the mint and nerf and maybe the n7 or yotd but all they done was change the strap on the yotd and kept it simple. Cws on the 4s shh you mean color. One solid color and the rest was the strap.
The 4s had 5 or 4 cws that were ok. The 6s had variety of cws that stood out ligers, illusions I can go on and on about the 6s. The 7s though. Man just go join the kd 4 thread and talk about resales and "I wished"