samsung t240 is a good choice. it has hdmi,vga and dvi support also it has usb port support. you said limited budget but i don't know what your budget is. So if you tell you can get a better advice. Also in 24" or bigger monitors you should also check the wall mounting option because they're really big and you may think to hang it.
The 4890 is perfect for a 24" monitor. Judging from the specs 'on paper' that seems like a decent deal on the monitor. It actually has the best pixel pitch size of all the 24" monitors listed on that site. Be sure to look up some reviews of that make and model monitor before you purchase though. There may be a reason it is the cheapest 24" model there.