both skis are dope. I switched from the invader to the habit (now the villain pro) last year. the villain is a little stiffer but still buterable and has more energy so I found it more fun and responsive on jumps. but the Invader is an unbelievable value. it is an awesome park ski- buttery, pretty playful, and durable. the butter zones are also fun- when you hit the certain point in a press, the skis give and you lock in- a cool feeling. also, the biggest difference I have found between the two skis is the amount of edge actually on the ski. the invaders are designed to be ground down over time on rails and resharpened so they are the thickest edges out there, but the villains have the thinnest edges I've seen. it took about 2 weeks not hitting a ton of rails to bevel over my edges to the point that they couldn't be sharpened, whereas my invaders I sharpened a bunch of times and then ground them down a bunch of times and I still had edge.
those are the pros and cons that I have found in the two skis in my experiences. either way, they are both good price point skis and you won't be disappointed as they are both playful in the park.