There are lexan or polycarbonate spoons available from almost everyone who sells outdoor gear. My favorite, however is one like this
that's sold at Campmor. For some reson, I prefer the elongated shape to the more rounded shape of the REI spoons.
Another interesting new design is the GSI Piranha "Foon"
that's sold by Backcountry Gear.
I haven't tried the Dairy Queen model you mentioned, though I may have to swing by DQ for "research purposes" to have a look. One issue, however, with any long-handled spoon is that they can be hard to pack, which is one reason I prefer a 2-piece solution that includes the extender.