I've been staring at this for about 30 minutes wondering if it is worth selling my U3011 for, but can't make my mind up. If you're less gun shy than I am, perhaps this is for you. It has free shipping at NCIX as well. At $599, it seems to be well below Ebay prices and this is the USA version.
http://www.ncixus.com/products/index.php?sku=95635
Samsung U28D590D does use a 4K TN panel, but it supposedly is decent and runs at 60Hz over DisplayPort.
http://www.ncixus.com/products/index.php?sku=95635
Samsung U28D590D does use a 4K TN panel, but it supposedly is decent and runs at 60Hz over DisplayPort.