hp27f vs hp27m monitor - response time

[elisar]

Hi, I am interested in two hp monitors, the "27M" and the "27F", I see that the specs are pretty much the same except from the response time which apparently is just 5ms in the 27M and up to 28ms in the 27f.

Could you please help me clarify if 

1/ this information is correct

2/ which are the main differences between the tow products

3/ I haven't seen any certification specified in the description of the 27M could you kindly tell me which are them

Thank you very much in advance

[elisar]

Hi, basically what puzzles me is the high response time, 14 ms to 28 ms on average seems quite huge. There will certainly be ghosting effects even if looking at common videos on youtube, so if you could give me some advice about other models with same charachteristics but with a lower response time this would be very helpful! Thank you