You are asking two questions, so here are my two answers:

Yes, it's very good, the best version of Poser yet in terms of its usability, capabilities and quality of output. (It has to evolve and get better, or it would die).

Along with Poser 8, it's a newly developed product, so yes, there are some teething problems (see many other threads, as mentioned above). I have not had any major problems with it myself, however.

"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)