TimberTech has several lines of product, which can be viewed at www.TimberTech.com.
"Looks like wood" honestly depends on the person- we've had some folks swear a PVC product looks just like a painted Cedar... and some folks prefer the look of a basic composite- and both folks will swear their selection looks just like wood. :)
The XLM product line from TimberTech is their full-PVC product. It is available with a hidden fastener system, does have a natural wood grain texture, but will feel & perform like a PVC.
On the other end is their EarthWood line, which also has a woodgrain, but is a more traditional composite, and has the coloring of a tropical hardwood.
Take a look at these product options- and feel free to contact me here, or directly (Matt at BreyerConstruction.com) if you have any questions. I'm not a TT rep, but I am a deck designer/builder, and would be happy to answer any questions I can.