I will reserve my opinions on the tartan designs and relevance themselves, but here's a link to our Irish Wool tartans gallery which shows all of the Irish Tartans (county and "universal ones" side by side. Also, the County CREST tartans have pics of the crests on them...

http://www.usakilts.com/store/tartan...=show&gazgal=2

I hope this adds to the discussion.