Wow, narrowing it down to just one...

I would have to say for me it would be the Cumming Hunting Ancient, which is also the Buchan District Tartan. It is the primary tartan I wear at present, and represents my two great-great grandparents who immigrated from Buchan & Aberdeen in the late 1860's. I am also the Missouri & Arkansas Rep. for the Clan Cumming Society.

Cheers,

T.