Poser Pro 2014 has been working fine on Macs, but be aware that Apple have done something in the latest release, El Capitan (OS X V10.11), which seems to have affected Python. If you use Reality and/or the DSON importer, make sure you get the previous OS version, Yosemite (OS X V 10.10), or Poser won't start with those plug-ins. Maybe others too - just be aware. There is plenty of info on the forums about this issue, so do check if this is still the current situation.

'Most add-ons are PC only' - even if true, it's irrelevant if you don't use 'most add-ons'. You just need to check the add-ons that YOU use, to make sure the author has built Mac compatibility in.

'... paying twice as much and getting half the machine.' Yup, millions of gullible people with too much spare cash fall into this well-hidden trap. They just get on with their creative stuff and never, ever find out how stupid they were to buy a Mac. Funny, that.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)