Window replacement: I"m trying to decide on what type of grills to put into the new windows

I have a picture of my house. I would like to be able to see what it would look like with different grills in the windows so I know what it will look like before I buy the new windows. I was thinking of having 2 or 3 horizontal bars in each of the windows, instead of the horizontal and vertical grill work that they currently have. What do you recommend would look best? What would you do with the 1/2 moon window too?