The first Pokemon Ranger - I did like this game, but it's my least favourite of the Ranger games. It was fun having to draw a certain amount of circles around a Pokemon, but I disliked that the counter would reset if you stopped. This made fast Pokemon like Flygon very annoying to deal with. I also didn't like that you couldn't take your Pokemon out of the area where you caught them. But Charizard was the most tedious thing I had to face in this game. I eventually gave up on this game after trying so much to beat it.
Shadows of Almia - This one dealt with my nitpicks about the first Pokemon Ranger. I also loved the story, the music, Team Dim Sun, and the big partner variety. Aside from that, I was surprised by Kincaid revealing himself as a villain, but it was wonderfully done.
Guardian Signs - This is my favourite Pokemon Ranger game. My favourite aspect was the new Poke Assist system; Your Pokemon could actually attack the Pokemon, and stay with you until it got attacked in battle, performed its Field Move in the overworld, or if you dismissed it. I also loved how you could actually fly around the region. Other things I loved are the storyline, the music, and more... In fact, I can barely name anything I didn't like about this game!