Are Papillons Good With Pugs Or Any Other Dog Breed?

i have a pug and was thinking about getting a pap becuz i think they are so adorable but my mom and dad say that i should get a med. sized dog cuz the pug is sorta a handful. i heard the paps are very smart and the rank #8 on the top ten smartest dog breed list i just need to kno if the can get house trained as easy as most pple say.
what are some other thing that the papillon can offer into the family? are the yappy, do they have aggression problems. plz inform me becuz i rlly rlly want one. im very responsible with my pug. i live in a apartment with a yard in the front. and if there are any web-sites i can go to for more info plz post them to. it would rlly mean a lot.