Gen 3 was by far my best pokemon version, AMAZING story line and good models, second would be pokemon silver, loved it how it had no colour, and how i forget to put the charger in the gameboy, having to restart all over again as the save button didn't work......
Although i usually don't like the newer gens as the models, in my opinion are ridiculous and have no originality, as well as the names of them, i quite liked black and white 2 but i quit when at the elite four because the design of the place place was bad, and to me it was just boring trying to defeat the elite four.