Can't go wrong with the Oxtars. If you don't want the full length, or the price, try the Joe Rocket Meteor.
I've had a pair for about four months now and was debating between these and the Icon Field Armors or Super Dutys. The Super Duty looked too short. I'd heard the Field Armors, while looking totally bitchin', had a really thick toe that made shifting tricky on some bikes, and that it was very stiff, so I went with the JRs. They were stiff at first (they have a hard plastic armor on the sides and shin) but have broken in nicely. I wear 'em every day, even to work, where dress is "business casual."
Before that, I had the Vega Nitro touring boot.
At $70, the thing's a steal. Very, very comfortable to walk in, but wore out after a year of near-daily wear.
If money was no object? I'd get some Sidis. Probably the Canyon.

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"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me."
— HST