James, for "prototyping" software i am told Solid Edge is the software to go! (still on my to-do list to learn)
since inventor is not really that great if you are still in the designing phase of a construction.
That said: inventor is still the most adopted software our customers (from my engineering bureau) use.
mainly because you can buy it with a discount in combination with AutoCAD and 3D studio max.
One of the things i do at work is working with a Faro Photon 120 3D Laser scanner and editing 3D pointclouds into workable models
<Snap! cant post pictures!! URL:http://s203.photobucket.com/user/FrANTICxl/media/Naamloos.png.html>
(a small example of an processed 3D scan made by me, rendered in Inventor 2012 with raytracing (on the ribbon: view tab) on highest quality)
Currently though i am interested into starting a new "hobby", like making instruction videos for small engineering projects, since i cant do this at work, and not for customers we have at my office, i will aim this more into startups and household-engineers.. and do this in spare time. hopefully i can extend this plan.. but at its current state i can not yet reveal to much. (tough i'd love to do a brainstorm session on skype with people who are really interested but it is not yet mature enough for public forums).
Also i am still looking for an affordable Laser cutter for wood, plastics, cardboard and papers.
and a 3D scanner with a decent resolution.
if someone is building one of these and needs some feedback about it don't hesitate to ask!!
you can contact me on:
PM
linkedin: http://www.linkedin.com/pub/robin-van-der-molen/21/5b1/920
or Skype: franticxl