I used Pansear for the Striaton City gym battle, since I just wanted to get that out of the way, since I was doing a challenge that run. Apart from that, I haven't used the monkeys, but I have caught them all once, for whatever purpose they serve. :P I did breed a Panpour with Nasty Plot and Hydro Pump once and randomly used a Modest one I had in the Battle Subway though, and surprisingly it was the MVP for the time I used it. It was able to take out most Pokemon with a Hydro Pump after one Nasty Plot boost, which I found amazing. I didn't even train or level it, it was simply a level 1 Panpour with those moves. :D