The rarest

Which of these statements for picking one of the rarest "Boardster"s do best like?

SELECT Boardster
FROM (SELECT count(*) as N
FROM memberaddress GROUP BY Boardster order by N limit 1) aS P join (SELECT count(*) AS N, boardster
FROM memberaddress GROUP BY Boardster) as Q USING (N) limit 1;


SELECT Boardster
FROM (SELECT count(*) AS N, boardster
FROM memberaddress
GROUP BY Boardster) AS P
WHERE P.N = (SELECT MIN(N)
FROM (SELECT count(*) as N FROM
memberaddress GROUP BY Boardster) AS Q) LIMIT 1;


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