Newports and Kanyons are similar in feature, but just use different styling to the webbing part of the shoe for a different aesthetic. For lack of a better description, they made the Kanyons to be less "clunky" looking than the Newports. Women thought the Newports were too manly, so they made the Whisper for women. The Whisper didn't have as much of the clown shoe toe to it, which women loved. So, Keen made the Kanyon to be a more light looking Newport for men.
I'm the inventory buyer for a store and we sell Keen. We've literally sold thousands of Keens. I'll toss this out there - they're likely gonna fall apart on you. Our failure rate on Keens was nearing 10% for 2009. It's improved for us, largely because we only sell them to people who don't plan to use them very hard. At one point in 2009 and early 2010, Keen was sending entire containers of shoes back to Asia because the build quality was so poor. I think they have addressed many of those quality concerns, but they still have a way to go to increase the overall construction of their shoes. There are too many light components bonded together to really be durable.
Although they're not as sandal-like as the Newports, I'd look into the Arroyos as they have a much more durable midsole.