I found scanning with an Epson scanner deeply frustrating and am pleased I don't do it anymore! It's probably the biggest reason I dont shoot 5x4 anymore
What exactly do you find "deeply frustrating" about the Epson scanning process?
I am new to the Epson scanning genre, having previously used my Flextight X1 for everything, mostly 4x5 and 6x7. Now, with the arrival of 8x10 in my life, the Flextight doesn't cope and I bought a V850 to scan the 8x10 sheets. So far, I have only shot FOMA 100 negatives (they cost only Eur 3 per sheet and I develop them myself in Rodinal, so they are the perfect training material). I have only scanned about 10 sheets so far but I haven't had any Newton rings and all images are sharp, unless I missed focus at the shooting stage. I use the 8x10 mask (an extra sold by Epson) and I am ready to make the thicker mask
downloadable from Ben Horne's website if I get Newton rings in the future, with other film stock. Silverfast software makes the scanning process quite easy - I scan into the HDR RAW format for subsequent processing in Silverfast HDR. Similar to Flexcolor but much, much better. At this early stage, I am obviously blissfully unaware of what might come later, when I start scanning my stash of Portra 160 that I am saving for the Summer vacation road trip.
I have watched a bunch of Youtube videos by people like Nick Carver, Mat Marrash etc. - they all scan on Epson scanners, produce beautiful images and I have not heard any complaints, apart from the Newton rings issue which seems to be film stock-dependent and can, as it appears, be addressed through the use of the aforementioned makeshift separator mask. And this relates only to the 8x10 format which is scanned right off the scanner glass, whereas 4x5 and smaller use the supplied plastic holders which should address Newton rings effectively and allow the use of the higher resolution scanner lens.