For backpacking/hiking boots that are non-military/hunting styles...
The fewer the seams the better - full leather upper with only 1 or 2 pieces.
non-Gortex liner will give you more breathability.
Shanks (full or 3/4) will determine the flex.
Soles - vibram lugs for better traction.
I prefer Scarpa or La Sportiva, maybe Vasque ... (and Danner can be a good one for guys)
If the problem is cheaply made boots (and most are, since outsourced) than consider a custom boot.
Example
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ETA:
Dude - don't wear your boots in the chicken coop - c'mon now...
[edit on 22-3-2010 by LadySkadi]