I'm thinking about doing the John O Groats to Lands end next summer.
Have Blue Pig for the mountain biking and a skinny wheeled single speed, so ideal opportunity to upgrade the fleet.
Thinking steel frame, gears, saddle and handle bar bags, no panniers.
Maybe a Planet X Kaffenback. People seem to like Surly Karate Monkeys.
I will probably custom build, but if people rate complete bikes, I'd be interested to hear.