I like the prismatic egg! I would love some pajamas in that color scheme. I bet the prismatic egg would look great next to a dreamy egg.
I also really like the turquoise squid egg. I'm not a Splatooner so I didn't go for it, but I think it's very cute and think the egg shape works well with the squid!
Since I'm a sucker for the pastel colors I really like the prismatic egg and the my melody egg! Dragon scale looks really nice too, I just don't have enough orange/red collectibles to make a good line-up, but that's my (poor wallet) problem not the egg's fault lol