Am I missing something here? What does V27 offer that Martin's toggle_3d_final doesn't? I understand that V27 will offer Perspective (3D) mode via a selection in the hidded Nav menu, but is there anything else V27 has/does better than the V26 Martin put together? Also, since my Nav is out of warranty, having a version that looks like it's dealer installed isn't important to me. I'm just wondering if V27 offers anything else? Thanks.