Don't much care for either setup, but if I were in your position I would get the basics.
First:
IMO, the most important aspect of any suspension system is the proper match between spring rates and shock valving. You won't get this exactly right with Konis, AGXs, or Illuminas, regardless of how "adjustable" the system is. Because the Tein Basic dampers and springs were designed together, they should offer a reasonable match.
Second:
Tein offers a more solid package, no loose threaded collars, no mismatched dust boots, no guessing about bump stops and proper spring seating.
That said, go Mugen Showa.