I much prefer the Cardigan Welsh Corgi's temperament to the Pembroke's
Interesting note - even though they look very similar, and they're both called Corgis (Corgi is Welsh for "dwarf dog"), they come from two entirely different lineages:
http://www.dog.com/dog-breeds/welsh-corgi-cardigan/In the Cardiganshire region of Wales, the Corgi with a tail has been the all around farm dog for centuries. It is an excellent cattle drover and vermin router. Although it has been interbred with the Pembroke Corgi since the 19th Century, it does not have the same ancestors. The Cardigan has Dachshunds and farm Collies in its background and the Pembroke descended from northern Spitz type droving dogs. The small size is an asset in the Corgi's style of droving. It nips the heels of the cows and when they kick in retaliation, it drops to the ground to avoid the flying heels. The little dog is fearless seemingly unaware that it is so small. The first Corgis were shown in Britain in 1925 with both types in a single class. In 1934 the two varieties were separated for show purposes.
http://www.dog.com/dog-breeds/welsh-corgi-pembroke/In the Pembrokeshire district of Wales, the Corgi without a tail has been the all around farm dog for centuries. It is an excellent cattle drover and vermin router. Although it has been interbred with the Cardigan Corgi since the 19th Century, it did not have the same ancestors. The Cardigan has dachshunds and farm collies in its background and the Pembroke descended from northern spitz type dogs. The small size is an asset in the Corgi's style of droving. It nips the heels of the cows and when they kick in retaliation, it drops to the ground to avoid the flying heels. The little dog is fearless; seemingly unaware that it is so small. The first Corgis were shown in Britain in 1925 with both types in a single class. In 1934 the two varieties were separated for show purposes.