thanks for your answers!
@BHawthorne
* yes I know that you are not allowed to mount every projector in portrait mode, but some are physically supporting it.
* sorry, I guess I don't fully get your second post. but I'm programming the distortion and soft edges etc myself with VVVV: http://vvvv.org
Yep, the problem is actually finding concrete information on which ones work and which ones don't. If you find out a model that works good for you over time I'm sure others will like to know what to buy to achieve portrait mode. In my personal experience I think the BenQ W1000 might work for portrait mode. We tested one mounted portrait for 8 hours straight with no issue.
Even if you do use something else, it'll help to send a request to Immersaview to let them know there are more people out there that want 5x1P NTHUSIM capability. :wink: