As someone who used to live in Tampa Bay—and may have to move back for family reasons next year—I find that a little dubious as well. :) Although to be fair, Tampa and St. Petersburg both got measurably more interesting in the last decade than they were when I left in 2002.

Never lived in Jacksonville, but I’ve visited it and have a friend who used to live there. Jacksonville is to Florida what Fresno is to California: bigger than you think, probably perfectly pleasant, utterly non-descript. :)

Don't know yet. One thing I realized is I can't really decide whether a place is worth moving to without living there for a few months. So that's what I intend to do before I uproot my family and move. I like TX in general, but a week or two does not give an even remotely complete picture, beyond just the basic "affordability" and quality of available housing stock.