1six of one and half of a dozen of the other; Hobson's choice; Tweedledum and Tweedledee. | Lit. "Half a Catty or Eight Taels", which is the same amount (in old China, 1 catty = 16 taels = 600+g; in today's People's Republic, 1 catty = 500g = 10 taels). | Note: Some publications make a distinction betw. 両 (tael) and 兩 (two). Some publications don't.