SW17LS

Swiffers are great! If you want to go a little higher end get one of these:

http://www.autogeek.net/dashduster.html

As far as products and brands, there are literally too many to tell you about. Check out the detailing forum on here, autopia.org. autogeek.net...

Arty101

Personally, I'll be looking for the 303 Aerospace. There's enough scratches or wear on the dash due to the sunshade that needs something other than water and a wipe. The pigment of the dash is pretty thin since the grey underneath the black is showing at places.