We like Surly - they make interesting, versatile and unusual steel bikes. They design and produce durable and reliable parts for people who ride a lot.
Surly Bike Sizing Chart
Fat Bike Frames
Build your own fatbike! Generally available as a frameset (frame and fork) unless otherwise stated We can also supply as a rolling chassis - frame+forks+wheels+anything else you need to transfer stuff onto your new dream bike!