My friend recently downloaded this fun app on itunes - which tell you about 3 most compatible idols and calculate the compatibility for the idols of your choices.
The grades (ABC) are look, personality and skinship from left to right.
Here's my results she put into her app.
Try to find the app if you have iphones or itunes, it's fun ^^! There's one picture of the app in case you're wondering about the app's name and what it looks like ^^!
P.s Kim Woo bin isn't on the list - *faceplam* ikr !!!