I found a cap comparison with the R3K. Even though the resolution is ridiculously small (What a fucking boneheaded idea.), it is evident that the R3 has better colours.
Sampling the R1, I see plenty of frame judder and dirt. What went wrong? They must've been supplied with worn television masters.
EDIT:
Even I was to buy the R3, would I be able to replicate the R1's subtitles? I can see why they boasted about the programming, they've achieved entirely with the limited soft subs supported by MPEG2 what fansubbers normally do with hard subs.