SNA 3, you got it right, run dual monitor setup is better using IPS panel than TN. When you see at different angle on the screen, color wash noticeable in TN panel, meanwhile in IPS is seem negligible.
Here some recommendation, run dual monitor setup, IPS panel mostly recommended.
1. Asus VS239H-P
2. Asus VG23AH Passive 3D, overclockable to 75Hz in 2D mode.