I was out for a big ride on my El Mariachi today. Of the (approximately) 8 hours duration, 30 minutes was spent thinking "I'm glad I'm on a 29er". The rest was spent thinking "I wish I'd brought my 9:zero:7".
I also have a Carbon Blur XC hanging up in the garage. It's been ridden maybe 4 times in the past two years. And a carbon Cube road bike. Frankly, I really enjoy the Amazon more. It's comfier, lesh harsh and, if slightly slower, gets me anywhere I want to go quickly enough.
So, I'm beginning to think a fatbike and a Ti tourer/CX is all I really need