Any LCD TV will be great ... make sure you have it at least 1080 capable so you can enjoy great and crisp picture.
I would suggest somthing for you, take a USB stick, load it with some pictures that you familiar with their colors , brightness and contrast. while u r shopping, plug that USB to TVs that match your budget (most new TVs have USB port as a standard nowdays) and check which one is appealing the most.
monitor would be great if u r in small room and no distance between you and the screen.
monitors always have sharper images (just my opinion) but the bigger u want them, the more they will cost you. however TV is much better and popular solution if u have big room and far distance from your sofa and the screen where you can just buy bigger screen at low cost.
good luck!