IPS panels are nowadays are being used by even players like Sony for one of their top of the line W800 series. So there is nothing wrong in that. They have got the best out of the IPS panels, IMHO. Similarly, though Pana may not be in the same league of Sony in getting the best of IPS,s till I think they are doing better than the LG, who is the main manufacturer of IPS panels. Regarding deep black in IPS panels it again is subjective and don't expect to be as good as the Sony W9 series. Overall I liked it, and it seems more VFM at that point of time. If you don't need 3D, then even R452 may be a good choice. Just demo them all together in a large store like Croma/ Ezone/ Digital etc.