Actually, there aren’t dozens of translations, only about six. Many of these are reprints; for instance, 978-0226801063 is a reprint of Thomas Hobbes’s translation from 1629. Hobbes was a great writer, but his English is of course a bit archaic, so many people find it hard to follow. More recent translations are Crawley (1903), Rex Warner (Penguin, 1972?), Lattimore (Hackett, 1998), and Martin Hammond (Oxford, 2009). I haven’t seen all of these, but I’ve always liked Warner, FWIW.
