OK, here's my reason for asking for opinions.
Years ago I bought a used and ancient
55mm f/1.2, a lens that I discovered afterwards has a reputation for being soft and having tonnes of veiling flare. It's also known for having so-so bokeh. Shot wide open, I'd say that's a fair assessment -- the lens isn't sharp, it's riddled with flare and the background, though very blurry, has jarring bokeh. Too bad, but it cost me only $50 so I wasn't heartbroken that it sucked.
However, if shot at ~f/2, the lens is tack sharp, contrasty and its bokeh, at least in my opinion, looks nice. OK, Maybe not as creamy and smooth as the
new 58mm f/1.4, a recent lens that has been optimized for bokeh, but definitely not ugly.
Anyway, the lesson I learned yesterday is that aperture not only affects the amount of blur (well, duh!) but it can also radically change the character of the blur. At f/1.2 my old 55mm has ugly bokeh, at f/1.4 it's OK, and at f/2 it's rather good, which is the aperture I shot it at.
Joe
P.S. Here's a picture from the new 58mm f/1.4 (not mine), a lens optimized for smooth bokeh.
It's hard to compare it directly with my picture, but the bokeh of the old 55mm f1.2 doesn't look too shabby.