What is considered premium denim?

Common premium jeans brands (with increasing popularity in Singapore) include:

Citizens of Humanity [http://citizensofhumanity.com]

Diesel [www.diesel.com]

Seven for All Mankind (not related to Seven jeans) [www.7forallmankind.com]

True Religion [www.truereligionbrandjeans.com]

Antik Denim [www.antikdenim.com]

Rock & Republic [www.rockandrepublic.com]

Nudie Jeans [www.nudiejeans.com]


and others such as Evisu, Paige, Paper Denim & Cloth, Earnest Sewn