The Katos are repackaged from Heljan. I do not know if the TomyTecs are more "Japanese".
Judging from the photo on HS, the Tomytec are slightly more detailed. I'm presently assembling a pair of the Kato/Heljan ones, and they're very plain. The overall design is almost identical, but the girders are close to smooth, while the Tomytec appears to have raised gusset plates and similar small details.
The Kato ones are a real pain to glue, BTW. You have to line up the edges and clamp with tape, there's nothing on the model that makes it want to go together the right way or stay there long enough for the cement to set. Jeff, are the Tomytec ones any easier?
IMHO towers look like towers from more than a foot away.
Agreed.
But the Tomytec look "identical" to the JR East-owned tower
in this photo.