i personaly either keep or have kept coral bandit shrimp, sexy shrimp, cleaner shrimp, fire shrimp, pistol shrimp, mantis shrimp emporer shrimp, peppermint shrimp and a few other odd balls.
every shrimp has its ups and its downs. you will here mixed reviews on every shrimp. but peppermint shrimp i only keep for aiptasia and once it is gone so are the peppermints.
pistol shrimp can be destructive and can kill other inverts.
coral bandits i have heard horror stories about, but i have had not 1 problem with them so far. i have 1 in each of my 4 tanks.
Mantis shrimp of corse is not invert or fish safe. depending on wich kind you get.