I too like the Magnum boots

One thing I will say about "Light weight" boots - MOST can't be re-soled. I was quite happy to get a year out of a pair of Magnums

I'll be so happy when I can wear them again. Right now my leg wound prevents wearing anything over ankle high

Another option that I found - Comfortable, you can get them from lightweight to heavy uppers, and design them so that they have whatever soles you like:

http://www.russellmoccasin.com/

I had a pair made - lightweight 6" leather uppers (you could go canvas if you want) put with a tripple sole, and the heaviest Vibram soles (The Montagna Sole) - so far, I've worn out 4 pairs of soles, and the uppers are fine! With my weight loss, the boots are now a tad too wide, but I wear them when my foot is wrapped in a bandage. Look at the "PH" line for a cool, lightweight, but tough boot

Only problem - Oh my, do they cost, but they custom fit them to your feet, and if they don't fit right, send them back - they will make them right

(standard disclaimer - no relationship except happy customer)