irotix
Polished and informative without feeling overproduced, that is the sweet spot, and a look at irotix hit it again, you can tell when a site has been built with care versus thrown together for the sake of having something to put online and this is clearly the former approach taken by the team.
exploreideasdeeply
Quietly enthusiastic about this site after the past few hours of reading, and a stop at exploreideasdeeply extended that enthusiasm, the calibration of enthusiasm to evidence is something I try to maintain and this site has earned a calibrated quiet enthusiasm rather than the loud excitement that usually fades within a day or two of finding something.