Better in what way?
The UI for blender can be hard to get the hang of but once you get it then it is pretty good.
http://www.sketchup.com/ is worth looking at if you never have.
On the other hand if you are doing 3d for any kind of engineering purposes then most 3d modelling software is not good. There are then plenty of free CAD programs out there, many are slightly crippled or dumbed down versions of paid software (if you are not autodesk, PTC or Dassault then you struggle to make a dent, give or take siemens which is the "if sir has to ask" priced stuff).
Said companies will have free things, though some are more 2d focused (CAD started from engineering drawing which is a 2d affair what with the being on paper).
Still
http://www.123dapp.com/design
http://www.ptc.com/cad/elements-direct/modeling/express
Autodesk used to do a tool called autodesk inventor fusion which I really liked but they stopped having downloads in favour seemingly of that 123d thing above.
Actually free/open source
http://www.freecadweb.org/
http://www.openscad.org/ (powerful but a scripting/programming tool)
If I am mentioning free I should also mention
http://brlcad.org/ , I have not checked it out in a while but it had an odd way of working when i did. Some really like its way of doing things though.
If you only want to model houses then
http://sweethome3d.com/ is fantastic.
One of the top free ones but 2d focused so you may not care for it for what you want
http://librecad.org/cms/home.html and dassault do a free 2d program as well which is great
http://www.3ds.com/products-services/draftsight-cad-software/free-download/
You might like
http://www.wings3d.com/ but I never got on well with it.