After getting a new PC i thougt about getting a new monitor.
After abit of research i have found my self these options:
new 24ínch 1080p 120/144hz monitor 200-230€ (added to my ips 21inch and a 38inch tv)
used 24inch 120hz and maybe a second 24inch screen 120€-170€
Korean 1440p monitor overclockabel to about 100hz 290€
http://www.ebay.de/itm/New-Qnix-27-QX2710-Evolution-II-Slim-LED-PLS-QHD-Monitor-DVI-D-2560x1440-/251595471329?pt=DE_Elektronik_Computer_Computer_Monitore_Flachbildschirme&hash=item3a944239e1
my graphics card is 280x