Well the EK caps are the only option, but they are a pretty good option. They are made in Japan by the Topre Corporation, and come in a really great box, that has a very official looking label. They are all PBT, and feel as good, if not better than the stock caps. They are actually pretty much identical to the stock caps with minor differences in the legends. One slight bugaboo is that they come with ABS space bars, and they are expensive. So I guess that's two bugaboo's. Anyway, they are great. I have a pink set (aka "cherry blossom"), and a blue set. Both are great.
