Hahah. Asking that is like asking what drinks are good for drinking? It's a sodding broad subject mate
Most Monitors are engineered to suit mixing, as that's why most people buy them in the first place. What's your budget? Are you looking for a stereo pair, or a sub aswell?
Try as many out as you can in your price range, if thats available to you. Otherwise look for companies such as Genelec, Quested, Mackie and Blue Sky, to name a few from different price brackets.