Well, there indeed seem to be some bugs keep coming up(which is inevitable in some sense, btw), but personally I haven't met with a single bug that forced me to abort the entire game yet(actually, not even a tiny pickle hasn't bothered me). So I think the nightly version is really really stable
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Actually, when I first came here, I was very confused about the official publish and the nighty for the lack of explanation about the difference between the two. Now I'm using the latest nightly, and I still sometimes get confused since nightly just offers so much but actually stable enough to be called the 'standard' version IMHO, so I find no reason to use the official version, really. That being said, I think Meridian's suggestion makes sense.
I also understand some LPers choosing the 1.0, though.