branched alkane melting point

From Chad and the DAT Destroyer, we learn that more branched alkanes have higher melting points. However, Mike from Bootcamp shows us that this is only true when you exclude straight chain alkanes because straight chain alkanes have higher melting point than any branched alkanes (for same number of carbons) Should I just go with the more branched alkanes have higher melting point rule for the DAT?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums