I'm hoping smart people like Mr. Dorsey will chime in on this one:

I saw this design for an iso booth (it's like a pentagon):
http://www.vocalbooth.com/products/diamondseries.html

I thought this would be a great idea since there are no parallel walls.
But it is roughly approaching a "round" floorplan. And I learned from
people that a concave "round shape" is terrible for a room.

So would you give this shape a thumbs-up or thumbs-down?
(I'm building an iso-booth this week).