First off...
The Prophet 08 is a superb sounding modern day poly analog synth. It was NOT designed to sound like a Moog, so technically speaking it cannot be a 'con' if it does not do Moog style bass - it was not designed to. It does very good Prophet bass, of course all analog, and goes beyond for pads and juicy leads, and more.
Secondly...
I can highly recommend you the Prophet 08 or the might Andy A6. As for mono Vs poly synths, thats upto you and your needs. The LP is also wonderful and I love using mine.