I actually prefer Vigoroth to Zangoose. Better HP and Defense, It can put enimnes to sleep or paralyze them, it's ability is better (Let's face it, sleep is worse than poison), and it has a recovery move. Plus since they both get Crush Claw, the difference in their attack strnght isn't to bad. Plus you can take you time when you enemy is asleep. Zangoose really needs those quick kills and OHKOs.