I'll say that at first I didn't like the charger at all, but it grew on me. Still I love high fire rates, so I'll probably switch often between weapons, BUT I'm not really a fan of rollers, so chances are they'll not be on my rotation.
Also I feel like maps with corridors work better for a charger than widely open maps like Blackbelly Skatepark (but this map also has one of the best advantage point for chargers), so map rotation will also be a factor when choosing weapons.