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#11
I don't know if you can force a TV resolution to something it doesn't support. Hopefully a well made TV will prevent that.
BTW, I know that CRTs didn't prevent what you are trying to do. I learned the hard way and killed a CRT monitor.
I have read but can't verify that a screen runs best at its native resolutions. That said to answer your question you probably couldn't tell the difference.
In any case, if you want higher resolutions and refresh rates then buy a high quality monitor that can supports your requirements. But then to match this you need a comparable high end graphic card that can match these capabilities. Since you are aiming for higher than normal resolution and refresh rates then a computer monitor is your best options. There are good TVs that can match what a good monitor can do but they are very expensive.