I just bought this with plans to upgrade in the future when $$ isn't so tight.  Wanted to add my 2c in about it.  I LOVE IT!!!

What I would do before was pose and set everything up in Poser, import into Carrara 5 pro, then the nightmares would begin, one tiny thumb off and I have to start over.

NOT anymore.   All the content that you have in poser is accessable now in this version of Carrara.  If you are deeply into dynamic clothe or hair though - you'd have to get the plug in.  (Nudes ftw)

I really believe that Carrara just raised the bar offering this software for 20$.  I got it for 15$ with my voucher.

For render times alone I would choose Carrara over Poser - and that doesn't even mention all the other reasons it is awsome.

If you are stuck wondering if it is worth it to buy this Express version, take it from me, it REALLY REALLY is worth it.

I am:  aka Velocity3d