Hi Larry, I asked the very same question 5 months ago, and was told then that the next release is not expected until sometime after the 1st quarter of 2013, so it depends on how long you are willing to wait for the next stable release, which is pretty stable as it is.

My own thoughts on this would be, grab the stable one now, learn it and get free access to the beta, that way you get to learn the new features that are coming up, and then, if you use MoI commercially, you have a head start on those who wait and then invest time in learning those new features that you should have mastered by then.

Horses for courses really ...

Martin Spencer-Ford