[LaLaLand]

They all have be different, with a few similar ones who have something which would make them clash with the other.

BB7 was great for this i.e. Nikki and Aisleyne, both models, socialites, whatever but under the surface they were miles apart.

When picking housemates they should put them all up on a wall and draw lines to those who'll class and those who'll match, the set with the most is the final lineup!