One locally owned retailer aiming for a New York City vibe is closing and another is opening along Mass Ave downtown. The boutique shop Tantrum, which opened in October 2007 in the first floor of the 757 Mass Ave condo building, plans to close Jan. 31. The owners are planning a store-closing party complete with 80-percent markdowns on Jan. 30. Elsewhere on Mass Ave, â€œluxury menâ€™s designer boutiqueâ€ J. Benzal opened this month at 739 Massachusetts Avenue. The shop is owned by Butler graduate and New York transplant Mamadou Diallo. It will sell tailored suits and accessories for men.