Testing Upscaler models

I am testing 7 different Upscale models for my next workflow.

The test wants to find the best combination of 2 different upscale models passes (first pass is a 2x upscale, second pass is a x1.5 upscale) to get the best upscaled output image from a 1024x1024 image showing a 3x3 grid with 9 different portraits of the same person.

The 7 models used are the following:

4xFaceUpDAT

4xNMKDSuperscale

4xRealWebPhoto_v4_dat2

4xUltrasharpv10

4xNMKD-Siax_200k

8xNMKDFaces160000G_v10

8xNMKDSuperscale_150000G