I have an Apex with regular bars and a mic boom. To address a few items I have read: the mic boom is terrific
the little foot 'thing-a-ma-bob' does help to level the stand
it is difficult to stack keyboards mainly because it becomes hard to see the LCD screen and some of the controls of the bottom keyboard
sitting at behind the Apex does block both the view of the player and the audience, so standing is the best option

I'm looking for a good way to put my laptop on the upper braces without obscuring the PSR2000 display. I have a wooden shelf, but think that a clear, plexiglass shelf might solve the problem, but I can't find anything thick or affordable enough to do the trick. Any ideas?