When i think about group pairings i focus on number of members, ages, heights and other details like that so I voted for Mblaq. They are 5, the ages fit almost perfectly, they all know each other and i think they have good chemistry. Plus Mblaq as a group are kind of on the manly, ~cool~ side so it's a good match for a cute group like kara >0< this is why i don't like shinra so much. I think SHINee are too cute for Kara lol idk I like the cool guy/innocent girl thing.