For spring/Fall/Winter I use a pair of Belleville 700 Series Gortex lined boots with a Vibram sole. These boots have got to be some of the best boots I have used to date, including CF prospectors. They are super warm and dry and comfy. Check ebay they seem to pop up at pretty good prices from time to time.
In the summer I preffer standard CF issue Desert boots with the no clog panama tread.