23" LED monitor

Hey Guys,

This is more of a general question, but I'd really like if you could help me out ?

I am looking to buy 2 23" LED monitor (1920 x 1080) with 100 mm / 75 mm VESA mount. The problem I am facing is, I don't know if the "monitor arm" comes off for every VESA mountable monitor. Because I have looked into several 23" LED monitors, but not everyone's stand/arm can be detached from the monitor, so that I can mount it on my Vertical Monitor Stand.

I would very much like if you guys could suggest a model. (My price range is 170 - 190 for each monitor after instant/ mail-in rebates)

Thank you.