You can try Poser 12 for 21 days and see if you like it and if it works they way you want. Since each person has different uses for Poser it would be really hard to give you an good answer as what I use it for and deem critical may have no value to you.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13