do not get a ray or a brownbanded for a 220g, both will outgrow it. rays do better in square or circle tanks, because of their disc shape. and brownbandeds will quickly outgrow that (not 2 years, but less than a year, they can hit 24 inches depending on their feeding/eating habits, mine grew 5 inches in a month recently).
and please please please please (did i say please enough) never buy a shark or ray with plans of getting rid of it. if you are planning on getting a brownbanded, get a bigger tank. It drives me nuts when people buy sharks and rays with the intention of gettin rid of it when it gets too large.