Thanks all for the praise. It feels good to know what advice I give is appreciated and helpful.
About the question about putting a bearded dragon in an all screen cage, the only real concern is toes getting stuck in the screening. However this can be prevented by lining the bottom of the cage and partly up the sides with something, either the plastic trays you can get for some screen cages (you can get some for the Exo Terra screen cages) or using a rubbermaid style container the same dimensions as the cage. Linoneum flooring could be cut to fit into the bottom of the cage as well.
A few other minor concerns about screen cages is heating. With the additional amount of ventilation, heat can escape alot faster. Also, depending on what the screen is made out of, care must be taken with heat lamps, as a hot bulb can melt most vinyl screening or the coating of fibreglass screens. The other concern is non metal screens can be chewed through by crickets which may result in having holes crickets can escape through.
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PHLdyPayne