I really miss the text reflow from my Incredible too, but found a work-around that's working pretty good for me, at least for the sites I use most often. I played around with the text size and default zoom when you double tap. Not sure exactly which setting changed what, but I found a good mix so that when I double tap, it zooms to just the right level and fits the text.
In the stock browser, menu/settings/accessibility
check Force Zoom
scale text is set to 100%
zoom amount on double tap set to 115%
Minimum font size set to 17pt
In Settings/Advanced
Default Zoom set to medium
auto-fit pages is checked
Just play with the sliders until you get something you like.