I'm still using Poser 7 even though I upgraded to 8.  I like the new interface with P8, but the work space is too small with the library taking up almost half my screen.  I still think the scroll bar for the library should be on the left and not the right because if you shrink the library width the scroll bar disappears and you have to scroll back and forth to see it.

The Poser 8 Library still has issues such as items seem to disappear and reappear under the wrong folder so it is hard to find things.  This is with the SR1 update so I use P7 mostly except it's slow and crashes often (my computer is old), but P8 doesn't crash and is faster.

I like and dislike the new Library for reasons stated above.  I like not having to get out of one runtime to go into another, but I don't like that it mixes up my library items so I can't find them even though they are still where they've always been.  I'm sticking with Poser 7 for a little while longer.

Poser 2, 3, 4, 5, 6, 7, 8, 9, 10, Pro 2014, 11, 11 Pro