Like you said, TN panels generally have better response times than IPS panels. Because of this they can support higher refresh rates more easily.
IPS panels on the other hand, have much better viewing angles and better color reproduction (TN panels are actually limited to 6-bit native color depth and can only approximate 8-bit depth with spatial and temporal dithering).
If you are OK with 60 Hz and a 2 ms response time does not bother you (pretty much the fastest response time available for IPS panels) then go with IPS. Personally I think 2 ms response is more than enough for gaming; ghosting is only really noticeable once you go above 5 ms.
thanks for you help..but what about the 60Hz refresh rate ..i didn't try it yet..so i don't know is there is gonna be a tearing with the 60Hz refresh rate?