I have a pair of Thor 50/50 boots. These are short type boots and are as comfortable as sneakers, yet, offer the protection of an off road boot. I wear size 12 and these fit very well on the correct size (12). These are not race boots (although I raced the entire 2011 X-country season with them without any trouble at all !!! ) and handle long days of riding trails like nothing else I've ever used. Very easy to shift and brake. Incredibly friendly to walk on, but, I must say that they dont have the greatest grip when you're on a muddy hill. The price is great to. I think I paid $110 back in 2010. They are now showing they're age, but durable they are.
After 4 years of abuse I think they deserve to be retired. Will I buy another set? without thinking it twice!!!
I am by no means an expert, but, this is my experience with the Thor 50/50 boot (and the Axo Slammer).
Got this pic off the internet so you can see them. I think they're also available in black.
I got a pair of Axo Slammer boots before the Thor's. After using the 3 or 4 times, I ran out and got the Thor's.
Man, hated the damn Slammers... Very, very uncomfortable. Very...
Hope this help a bit.
TORKER.