I just picked up some Argentinian Red Shrimp from Trader Joe's. Boy they taste like tiny lobsters! A great first time experience!
What size are they? I might stop by the local one and pick some up.
Two of my local grocers carry them and yes they taste very good - similar to langoustines, but way cheaper - like $7.99/lb.
These were supposed to be 21-25 but I think they are slightly smaller.