>>55557945>>55557909Gen 6 for me. It kept Pokémon's original grid-based chibi style but upgraded it to peak performance (although Lumiose City was a bit clunky). ORAS did a great job at making Hoenn even more beautiful than it was in gen 3, whilst adding more appealing menus and UI than XY.
I honestly think menus and text boxes can make a big difference to the feel of a game and for some reason the Hoenn games got treated well in this area.