I like its ergo layout, key feel, and key travel distance [1]. I just bought a new one after the last one would become unreliable on keypresses, and I can't shake the feeling that it was just wireless performance issue, not actual key detection issue.
There appear to be no other keyboard with similar features, but wired (and I'm not up to modding it, as some have done).
I feel frustrated that Apple's keyboards have great wired/wireless connectivity and horrendous ergonomics, and ergonomic keyboards have terrible connectivity options.
(lol: just as I was typing this comment I've started having key issues on this new keyboard too, adding evidence that the previous one just had wireless issues.)
[1] don't get me started on mechanical devices! I actually tried a couple, and even got a Cherry Key sampler, and decided that they really weren't for me.