Sunshine (who I like) and Shabby (who I don't) have been the most noticeable housemates in the first week, so Rachel (who is

) ought to go. However, that is only in less than 1 week's impressions. We've seen many times characters grow as the series goes on - some more entertaining, some more annoying, so it's wrong to say the house will be more boring if this person goes as you never know.
But Shabby will go friday.