i never really had interest in either but zucker looks cute. im actually gonna pick up another copy of NL to make a sugar/food themed town and will probably add zucker!
I don't really get the appeal of animals modeled to look like stuff you're supposed to eat... and yet Lucky is just as creepy in an entirely different way.
Still Lucky's creepyness can be considered quite a bold decision for a kids' game... and I like dogs wayyyyy more than octopuses. So, Lucky it is, for me at least.
I perfer Lucky more. There's nothing wrong with him from my point of view. He's just a cute mummy dog. I do not like Zucker though. I just hate some parts of his design. (=ω=; ) I do have his amiibo card tho, but that doesn't change my view of him.
Zucker is one of my favourite villagers! I would chose them depending on your theme though. And if you dont have one, Zucker goes well with Marina and Lucky goes well with Ankha.