budget aside 1.2, however if you asked what's the best value for your lens $ in the canon 50mm line up, it's hard to argue with the 1.8 or 1.4 The 1.2 does not, at least in my mind, justify it's price tag. Probably more important questions of whether one would buy this lens without the constraints of a budget (which seems very rhetorical) is what you plan to shoot with it, what your current kit looks like, and whether or not you make, or plan to make, $ off your captures?