lcd-grid-v2 is more accurate but it's kinda resource intensive. lcd3x is lighter but you have to set it up to get a good looking image. retro-v2 is a pretty good dotmatrix shader
In terms of filter, I think it is down to personal preference. I do prefer dot matrix more than scanline in general. but I think the scanline on Anbernic is same as the analogue pocket/mister version.
