APC. They're French. Raw denim, will last years and wear well. You can buy direct from APC online but if you live near to a big town it might be worth going to Urban Outfitters to try them on, they're vanity sized so you need to maybe go down one size. Uniqlo also do good jeans, Japanese raw denim and much cheaper.
I love Gap bootcut or flares. I'm 5'9 and size 10 and find their 34" leg is perfect. Used to buy jeans solely from next but last couple of pairs I've bought have been a really poor fit (way too big, oddly) and poor quality denim. Oh, and the long length seems to have shrunk a bit (can't believe I've suddenly got any taller at the age of 42 )