Right, different emphasis. I have no particular interest in recording skype conversations (and anyway, isn't that illegal in many places unless you obtain the prior consent of the other party?), but I do want the voicemail management that PM offers. PM's free version actually met my needs; I just upgraded to Pro to support the developer.
BTW, FWIW, I just learned that the PM online forum is mostly unavailable in recent days because of broken undersea cables from the recent earthquake near Taiwan.