I've been told the 9cm pitch ones aren't good for much but am looking at the 4.5cm pitch ones that sell for around $2.5K for a 2x3 meter. Have any of youse guys checked them out? Even at that pitch they are only ~65x45 pixels. You rarely see an example of a photo on one LOL. Obviously for smaller rooms where space and budget don't allow for better. Useful or crappy/tacky?