65hz is unacceptable for most people. I use to run 1024x768@60hz on my old 15" for years but my eyes would always hurt. Now after I enjoy some nice 85hz refresh rate, using 65hz gives me a headache very quick. I might be able to stand 75hz for a little bit.
Now that is a good monitor, but like the 755DF and the 19" 955DF, the refresh rates are a bit low. But like zuffy said, 1280x1024 may be too small for some people. I think most people with 19" monitors run at 1280x1024.
The 755DF does do 1280x1024@85hz though. It's on
Samsung Monitor It also can do 1024x768@85hz (in spite of saying recommend res being 1024x768@
75hz) like the 753DF. I can see where you got the 753DF though because of the $30 mail-in rebate.
So in summary, the monitor will be fine if you don't run 1280x1024 or you will run that resolution, just don't mind the low refresh rate but that's bad on your eyes.