Season 6 is great once you get used to Jonas and Season 7 is amazing, especially the finale. Season 8 has some really great moments, especially Citizen Joe. Season 9 and 10 feel different, but that is because of RDA leaving the show and Claudia Black becoming a regular. Regardless, they are still good. I think they could have gotten more life out of it if they split off and became the proposed "Stargate Command" show instead of just being two more seasons of SG-1.