Good point.  Unfortunately, I do all my modeling in either Amapi or Hexagon.  Even though I've been using ACAD for 16 years, I find that modeling w/ it to be very counter-intuative for me.

Nano - if you'd like me to test out a solid import, e-mail me a solid model and I'll e-mail you back a 2007DXF of it so that you can guage the results yourself.  I'll send you my e-mail through PM.