My own humble opinion on the state of the union: thz.la is somewhat catching up to speed on their release schedule again. But I also notice dioguitar (if that's the official/defacto name of that group AKA yellow-watermark) might be getting better?
Looking at two different screen caps of SSNI-178, one is 2.3GB (480p) another is 6.95GB (1080p) both look like dioguitar watermark but the new top right corner light grey watermark over the blurred IPPA+studio (legit) watermark. It's only 2x worse (not 1000x) than the thz.la watermark. A big change is that the SD ver also use this less-evil watermark and it's reduced to 2 lines of text (from 3) (see
Julia lost a nipple)
Thz.la is still my preferred source. But if dioguitar's watermark is now less evil than before, and his release schedule is probably faster than thz.la and perhaps his frame rater is marginally better? Maybe I'm open to switching.