admittedly, the label "stable version" is somewhat unprecise (and already heavily discussed previously). do NOT assume that the nightlies are inherently unstable... also, several of the previous "stable" versions contained terrible, sometimes crippling bugs.
if in doubt, use the latest nightly build. ( or, perhaps, wait until the nightly build is a few hours old. if no additional build pops up, it should be mostly stable
)