I agree.
I had been running an application designed to comunicate with an SLC and a CompactLogix at the same time, both get just some integer registers and some strings for communication, but the application also controls a serial Zebra printer, a couple of serial scanners and an access database. Been using version 3.46 since January, stable (minor freezes related to pleople turning off PLC I have not had time to create a routine to handle it), some very rare random freezes form unknown reason. For being a Beta version -and free!-, I consider it pretty good enough.
I would say if you want some more personalized support (Archie gives a good one anyway in the forum), you could pay him for it.