I came across this software company http://www.seac02.it/ that specialise in visual solutions, they have a realtime renderer, LinceoVR which has a free student/non commercial license, I don't know if there is a catch though, also check out the video for their Eligo software, it's pretty cool.
LinceoVR renderer imports the main translated nurbs formats including 3dm as well as the poly formats, as for wireframe I'm not sure, I just came across this software not to long ago, so I haven't had a chance to try it out.
Try this one! ;) Online! (free) (Dasault product ;)
Zoom, rotate, automatic rotate, move, anti aliasing, points... wireframe... color shaded mode
Cool for colors shaded mode but Wire mode is without hidden face so not very good in wire mode! http://www.3dvia.com/Pilou/models/42C266784A5C6E40
Thanks a lot for all this input, all those options looks great, it will help a lot in my research !!!
I even didn't know it was possible to have a turntable in MoI, super cool !