Pretty good in my experience. It takes about 10 seconds to start up but once it's warm it's snappy. It ran easily on my pi (without on the fly transcoding of course), although I did move it to a desktop so I could use runtime transcoding because I have a couple clients that don't support all the codecs.

I just tried it as well, thanks! I like it a lot, though I disabled transcoding (all my clients seem OK with the codecs and I just don't like it). I'm switching over to it now!