go to newegg or something and read as much as you can. see,what you can pick up on black friday. i mean-you find what will be on sale,then -if it fits you,then narrow your choices even further. asking about what we are using is pointless,cause technology changes over the time.
right now for example right now you can pick up some big a* 24" at the price of 19". keep in mind the temperature and heat monitors produce(if you trade from small home room or something). LED probably produce far less heat and consume less energy than good old LCD
i'm using hanns g LCD's for 5 years or so. also got them from newegg on black friday.no complaints