I HIGHLY appreciate the development policy of McNeel (and Michael's as well, of course) not releasing a new major version for the sake of money as most other 3d companies do, but rather do a thoughtful and careful development which is consumer-oriented and ensures better software with less bugs. I'm a bit hyped by the new v6 features as well (like the new realtime render preview), but v5 (and MoI v3) still meets all my CAD and modeling demands. So, both companies do a very good job!