EvilUs,
Shirley 'The Hammer's' preference for crawfish is
Cajun Crawfish . When she lived in Chicago she would place a big order and others, including me, would piggyback. It's been a few years, but what I've had from Cajun Crawfish in the past has been excellent.
8-9 years ago we were in Houston visiting friends, I went to Fiesta Market for milk and bread and came home with a 40-lb sack of live crawfish for .79c per lb! We boiled them up and commenced to pinching tail and sucking head.

6 of us managed to make a serious dent in those bad boys and the few that remained we culled the tail meat for crawfish salad the next day.
As an aside, one of the funniest cartoons I've seen was two crawfish wearing
human bibs, with a big bowl of people between them, asking each other if they sucked the heads.
Enjoy,
Gary