Thanks!
Here you are my latest test; I refined further the MagicUp upscale, using Super Resolution technique alone, with a more precise math calculation; result was a bit too rough for my tastes, so I added the BasiClean denoiser after that, plus the grain plate, that helps a bit...
SuperResolution V4 Vs MagicUpSR3 + BasiClean + GrainPlate:
http://screenshotcomparison.com/comparison/122583
MagicUpSR2 Vs MagicUpSR3 + BasiClean + GrainPlate:
http://screenshotcomparison.com/comparison/122584
now there are more details, but more aliasing as well... nevertheless, a huge improvement over the "basic" bicubic resize: