I've been trying the rgb3x filter myself lately, it looks great (if a bit muted) in fullscreen as long as you don't push your nose against the screen. It's either that or tv2x/3x that works best for me, I definitely think they look better than the unprocessed images.
1:
normal3x
rgb3x
tv3x
2:
normal3x
rgb3x
tv3x
3:
normal3x
rgb3x
tv3x
scan2x/3x is a bit too heavy, the other available "hq" filters seem to change a bit too much for my taste.
1:
normal3x
rgb3x
tv3x
2:
normal3x
rgb3x
tv3x
3:
normal3x
rgb3x
tv3x
scan2x/3x is a bit too heavy, the other available "hq" filters seem to change a bit too much for my taste.