Planars are used widely for larger companies. We use them at work because they guarantee that a model will be available for 3 or 5 years. I forget which it is. This is an advantage for companies that use alot of display and want a buy a uniform model. As a consumer I probably would not buy one unless it was a new model with the latest tech. They tend to be very vanilla. I'd recommend something like a Dell Professional display or the lowend Ultrasharp way before a Planar. Also a 1080P 27" is going to have pretty large pixels. It could possibly seem a little grainy sitting close.
http://www.newegg.com/Product/Product.aspx?Item=N82E16824260059&name=LCD-Monitors...