The best looking Shiba Inu plush toys that I've seen around on the internet are the ones made by KOSEN (Made in Germany). These Shiba Inu plush toys are extremely soft and the most realistic out of all the other Shiba Inu plush toys out there... I am not affiliated with this company, nor do I work with them - I'm just a fan of these plush toys because it looks the most realistic compared to other plush toys. Some Shiba Inu plush toys have abnormally large round heads, which can sometimes look cute or might just start looking like the Pomeranian "Boo" dog. Although, I personally like both types of plush toys. The most realistic plush toys are more for show and the more cartoony ones are more playful looking.
Also, remember to NOT leave your Shiba Inu plush toys around your real Shiba Inu; otherwise, they'll attack them thinking it's their toy!
Anyways, depending on which plush toy you prefer to get, usually the Japanese Shiba Inu plush toys are more rounder and cuter than the other kinds of Shiba Inu plush toys in general.
I'll show you what I mean, for example: