Which Intellicad do you use?

I'm a fairly new user, on the cusp of buying Intellicad.

I do love AutoCAD, but it's just too expensive.  Besides, the
Intellicad ethos of open source software
appeals to me.

 I've tried Bricscad, progeCAD (tempted by their free LT version) and
CADopia.  I have found that Brics is the most stable for me, and is
number one on the list.  I've found that fairly simple drawings in
Cadopia take a long time to regenerate, and progeCAD froze up as soon
as I tried to print preview.  Does anyone have recommendations as to
these or other programs?

David