For me P7 Sr3 is very reliable, P8 still needs SM to pull their finger out and give us a fully functional bug free ap, I just switched from the material room to the Pose room and it launched Talk designer full screen, froze and crashed.  It will sometimes collapse after a couple of renders. Not to mention all the stupid stuff that should have been sorted before it was ever released, biting my tongue not to say anything slanderous but 6 months(?) in I still haven't got what I paid for.