Ya I saw the M350, looks interesting enough. But with the PICO PSU, you have to have an external power adapter, correct? I'm trying to minimize the need for a shelf of any sort for this unit, so an internal PSU like you see in the Silverstone cases would be ideal, a smaller one is fine.
I don't really like the ISK series. I've built many ITX systems in them, and my issue is that they make a lot of the stuff in them very cheaper. The paint for one can't not get swirl scratches ALL over it and even down to bare metal once from a slight rub to a wood desk. Even when put on my soft rubbery/foam mat on the work bench it shows signs of wear (and I'm careful), very lame if you ask me. They were the ISK-150 and ISK-300, disappointing all around. Plus the stands for them were next to useless.
I don't really need a VESA mount as this TV uses a 400x400 VESA mount, most of the cases mount to a 75x75 or 100x100. I'd rather screw this thing straight into the wall. Going to be using wireless keyboard and mouse for it.
I saw something like this... http://www.e-itx.com/travla-c294.html
But it looks like its going to limit me to lower and slower hardware, wouldn't imagine an Intel i3 socketed mobo would do to well in that.