(1) the convenience of witnesses; (2) the location of relevant documents and relative ease of access to sources of proof; (3) the convenience of the parties; (4) the locus of the operative facts; (5) the availability of process to compel the attendance of unwilling witnesses; (6) the relative means of the parties; (7) the forum's familiarity with the governing law; (8) the weight accorded the plaintiff's choice of forum; and (9) trial efficiency and the interests of justice, based on the totality of the circumstances. Id. (quoting Pilates, Inc. v. Pilates Inst., 891 F.Supp. 175, 183 (S.D.N.Y. 1995)).