Now for a little good and bad news. The good news, obviously, is the low price, which is far more attractive than the $80 it costs to import Ghibli BDs from Japan (retailers either kill you on the price or the shipping). The bad news is the bitrate, which on the Sentai disc is one-half the rate of Ghibli's Japanese release. The picture seems to lose a little subtlety in the color and light, and although it's minor, the difference is there. That said, the US Blu-Ray trumps the previous DVD versions with ease.
I've included some photo comparisons, courtesy of DVD Beaver's review, so you can judge for yourselves. As expected, the many extras from Central Park Media's 2002 DVD is missing, but this was to be expected. The Ghibli BDs in Japan have few extras, in order to fit as much movie, as high a bitrate, as possible. So I think we'll survive, and collectors will have reason not to sell their older versions.
More photo comparisons after the jump; Sentai Filmworks (US) disc on top, Studio Ghibli (Japan) disc on bottom: