I'm a size 20, and do a lot of walking so have rather ahem "solid" calves. I really want a pair of knee length boots for work, and thought I'd hit gold with finding Duo Boots but the quality is appalling. I've just put the 3 pairs I bought in the shoe bank in disgust.
I'm happy to spend up to £250 a pair - and my calves are around 44/45 cms 