All the pretty lights and buttons! very impressive!
But I look at a couple of things in a system (now that I am old and falling apart)
I like DJ Express' system out of all those shown for two reasons.
1. Simplicity
2. weight/size
But:
The cords could be better organized and the external hard drive will fit into the back of the SKB case!
Use wire casing of some type and run all of your laptop cable from the case to the lap top in casing , that way hard drive, wall warts and power supplies are all inside the box and basically you have just one run of cable srom the case to the laptop. If it is available for your laptop look into getting a docking station!