You won't notice the minor refresh increase at all. Widescreen is pretty nice, I wouldn't go back to my old 19" over my 23". As long as you're comfortable concentrating on your screen and can see everything at a decent distance form your screen, use whatever works for you.

why don't you try them out
I preferred my 85hz CRT to my 60hz LCD before it burned out

so its true I will benefit from the extra frames then. I did think I noticed it a little bit

I don't know how much you'll benefit but you own them both
so use whichever you prefer

you definitely will.

Just use the 60hz widescreen, then when you want to play TF2 play at a lower resolution in fullscreen and force 75hz. ez

Use whichever has a lower response time.

So that's the Samsung.

see for education purposes: http://www.tweakguides.com/Graphics_8.html
tl;dr - refresh rate is only an important factor if your monitor is CRT, or if you are (for some terrible reason) playing with vsync enabled

If you can't get a 120Hz low input lag LCD then I suggest getting a 21 inch CRT.