So I recently bought the GAN356X IPG v5 (stickerless) off of Amazon. When I went to the Gan website, there were two options for GAN356X: IPG v5 and Numerical IPG. On the Gan website it doesn't really specify what the difference is between the two. What concerned me was that the IPG v5 version was cheaper than the Numerical IPG version, and I still don't know the difference.
The difference is that the Numerical IPG v5 actually comes with 4 extra sets of tension nuts.
[Numerical IPG] Equipped with 4 sets of GTN
which are explained (much) later down the page in the section 'The new GES+'.