BRRIP 1-3GB: Encode of Encode. Kung baga sa baboy, dobol dead. However, since the source (of the first encode) is pretty high quality, it's still reasonably delectable ika nga especially if your monitor is small - and that's also the power of x.264 encoding - efficient with quality.
Around 8GB: Encode directly from a Bluray or HDDVD. Kung baga sa kape, unang katas so dapat masarap. Pero depende sa skill ng Barista (encoder) kung gaano kasarap lalabas.
Around 20GB: If it's a REMUX or UNTOUCHED, there is no compression involved. That's a lossless rip from the Bluray source and therefore technically transparent to the source but transcoded to MKV na popular. If it's a lossy encode, that would be pretty high bit rate and could be very close to the source already - too close that differences may not be discernable no more.
Pinakamadaling makita ang differences sa kulay and linis ng image. Kapag very lossy ang data, compression artifacts would be here, there and everywhere.
Whatever, Bluray is the best...syempre, and somehow, I hear "more" sounds when the audiostream is TrueHD than DTS-HDMA
BTW AAC audiostream - very lossy and that is primarily meant for headphone listening - kaya paborito ng mga encoders ng X-rated stuff...