My first ever pokemon and still one of my favorites.
It also has a good graphics (for gameboy advance game) and the story is pretty nice. Even though it is a remake of the original red, blue, and yellow for me it is another different game.It also has many enhanced features (besides the graphics) like the running shoes which makes life a whole lot easier and faster by just pressing the B button; the sevii islands where you can catch some non-kanto pokemon like natu, hoppip, misdreavus, larvitar and many others; The Trainer Tower where you can battle other trainers but can't gain any experience; and many others.
I love it and I'm still playing it until now. It is one of my favorite gameboy advance game.
If you don't have this game then you need to buy one.
ps.sorry for my bad english :)