I have read that tiles are good to use on the bottom of your dragon's enclosure. I currently use the wood chip stuff so was considering changing, but first wanted to ask a few things:
1) do the tiles not make the ground very hot/very cold (depending on whether the light is on or not)?
2) does your beardie not miss bein able to dig and rummage about?
Woodchips I wouldn't recommend as a bedding anyway.
I would go with the tiles, 1st, If your lighting is good as it should be, it won't make the tiles too hot or too cold.
2nd, It's good on their nails, if they dig it will grind their nails down, thus not having to have their nails clipped..
I would IMMEDIATELY get rid of the Wood Chip's, Wood Chip's will be ingested by your Beardie and will cause Impaction, also Woood Chip's are Hard to Clean and Keep Sterile, and will cause Bacteria to grow.
Sate Tile is an Excellent Choice! The will keep your Beardies Nail's Trimmed, very easy to clean, very nice looking, no chance of Impaction, and are Cheap. You can also use Cermaic Tile as well.