JackNaylorPE :
No one "needs" 120 hz ....but it provides substantial benefit whereby IPS presents a detriment in gaming.
Don't get me wrong....IPS panels are great for photo editing .... the wide angle and accurate color are essential for this purpose. Do photo editing on a TN panel and grandmas anniversary picture will come out with her looking like a Madam from a brothel.
We have a photo editing workstation upstairs w/ U2711 (my son is taking a minor in photography at college) .... and he's "content" with it when he uses it for gaming..... The 120 hz Asus in the next room however makes the IPS look washed out and "hazy" ....you don't see ghosts but, by comparison, image edges are blurred whereas on the fast TNs everything is brighter and "crisper".
It's all a matter of comparison..... Put photos on the 120 Hz TN and they look overly saturated when they are actually quite good. In gaming, the 3011 actually looks pretty good .... until ya put it side by side with the 120 Hz job and then there's no contest.
I have had absolutely no problem with gaming with a 60Hz IPS monitor, with no ghosting, or "washed out colors" whatsoever. And my Vizio SmartTV's colors are awful compared to my LG.
And TN isn't true IPS:
"TN = Twisted Nematic - These are 6-bit screens that cannot really reproduce 16.7 million colors. They can only reproduce 262,144 colors; 64 shades of Red, Green & Blue. Thats (2^6)^3 or 64^3. All the other colors are created through a process called dithering. These typically have fast response times (for gaming) at the expense of color accuracy. These are inexpensive monitors."
I should add that fast response times (>5ms) are a marketing ploy, and you won't see a single difference placing a monitor with an 8ms response time to a monitor with >5ms response times. Not to mention that from what I've seen, they cost more. Pure marketing.
But then again, he's only getting a 660. If he was a 670 or better GPU, and it fit into his budget (which he hasn't mentioned yet...) he could use the 144Hz to it's full potential, but with the 660, if he plays on max settings in 1080p, he won't get any more then 60fps gaming.