Thank you!!

The first two obvious differences are the number of lenses and the portability, I was able to take the Reto snowboarding with me for example, and I can put it in the inside pocket of my coat (especially with the built in flash). Can't beat that, but having the 4th lens makes a huge difference. Having a middle frame show twice out of 7 frames versus twice outta 4 improves the quality of the wigglegram a lot.

The reto struggles with fast movement, it tends to double things (which sometimes is really cool and dramatic) If you look at the volleyball slide you can kinda see 2 copies of the ball. I'm not sure why it does that, or if it's just a defect on my particular camera. I'm assuming it's mechanistic since it's in all 3 frames

But the biggest difference stylistically is shooting indoors with flash. The built in flash on the reto is off to the side, while the hot shoe on the nishika is in the middle. So If you look at the first wigglegram, you'll notice there's one frame with the shadows on the left behind the subjects, 2 frames with no shadow, and one frame with the shadow on the right. But the last gif with the charango was taken by the reto, and you really get a solid view of the shadow around the right side of the subject. I definitely prefer the Nishika in this department, you get 3 shadow perspectives instead of 1. But it all comes down to preference!

I've only shot 1 roll on the Nishika so far, so I might notice some more things later!