I used the LM8K in a line array system with a floor to ceiling line array of 28W/4878T00, all open baffle, it sounds superb. The Radian drivers are very well made, much better than the pressed steel versions that come from many other manufacturers.
Studiotech, You wrote that You have them ready to compare with grs and neo. I'm about to pull a trigger on lm8k, but is it like neo8 at the top? it's lacking that sparks that Mundorf25d has?