want to buy a ds

Hi as far as nintendo consoles ive only ever had a gameboy back in the day and also own the switch, but i rlly want to own a ds. theres a lot of games i want to play but ig more specifically pokemon games, ive always emulated them but i jus rlly wanna play on a ds but i am like a total noob when it comes to these consoles and i dont know which ones are best and for what, i dont want to pay a crazy amount something reasonable, but ignoring price ig what is best for me? i dont plan on buying more than one console, thank you in advance