I have seen the Gik acoustic stuff and it's not very nice to look at. Whenever I walk into a room I see similar things from GIK. free consultations I have done and they just wanna load you up with panels. Hardly independent.
Acoustical treatment is a nightmare to deal with. Just buy sub traps for the corners, add some absorption panels to the first reflection and a diffuser panel or two behind the speakers and you're done. It's not rocket science. And if you really wanna have some fun put the panels on your damn ceiling. And get shades if you have windows. It's not rocket science.