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It's on Netflix now. I watched it the other night and thought it was pretty good.
Being a Toho film I assumed we'd be seeing a guy in a suit instead of a CGI monster, and the effects obviously weren't top of the line, but they weren't bad (I read the budget was only $10.8 million).
I haven't seen it yet, but it did win the Oscar for best visual effects and the below article is talking about how Hollywood could learn a lesson regarding shooting the movie with the later VFX in mind instead of using VFX to put bandages or problems and assuming they can make it look good no matter how you shoot it. So, it's interesting that you thought the effects weren't top of the line.
Anyway, looking forward to seeing it.