HG/SS is my favourite because I feel it brought a whole freshness to the two classic regions overall.
Now that I think about it, the amount of features on this game is wide: walking sprites, huge variety of Pokémon in the wild, gym leaders rematches, possibility to use the old GBC soundtracks, Pokéathlon and so on... Though the thing I like the most is the characters' remodeling, especially when we talk about Team Rocket and gym leaders. Only weak point is Mt. Silver structuring in my opinion; I in fact think it's rather dull and much prefer its G/S version.
Now that I think about it, the amount of features on this game is wide: walking sprites, huge variety of Pokémon in the wild, gym leaders rematches, possibility to use the old GBC soundtracks, Pokéathlon and so on... Though the thing I like the most is the characters' remodeling, especially when we talk about Team Rocket and gym leaders. Only weak point is Mt. Silver structuring in my opinion; I in fact think it's rather dull and much prefer its G/S version.