As an added bonus, I also performed a DR report on the 30th Anniversary Edition released in 1998. On the cover of the CD it say it was 24-bit Digitally Remastered. I've owned this version since about 1999, and I have memories of my 20's from this version

...I always thought this version was great, but back then I didnt have good equipment so what did I know! I havent listened to this version in a while, so maybe I'll try to A/B/C the three versions late. Anyway, here the report:
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Analyzed: Santana / Abraxas - 30Th Anniversary Expanded Remastered
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DR Peak RMS Duration Track
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DR10 -0.89 dB -15.03 dB 4:51 01-Singing Winds, Crying Beasts
DR11 0.00 dB -13.90 dB 5:20 02-Black Magic Woman/Gypsy Queen
DR12 0.00 dB -13.60 dB 4:19 03-Oye Como Va
DR10 0.00 dB -12.47 dB 5:01 04-Incident at Neshabur
DR11 -0.31 dB -13.11 dB 2:52 05-Se a Cabo
DR10 0.00 dB -12.39 dB 4:28 06-Mother's Daughter
DR10 -0.04 dB -13.71 dB 4:48 07-Samba Pa Ti
DR12 0.00 dB -13.61 dB 4:17 08-Hope You're Feeling Better
DR12 0.00 dB -16.03 dB 1:40 09-El Nicoya
DR10 0.00 dB -13.17 dB 3:47 10-Track 10
DR11 0.00 dB -12.47 dB 4:52 11-Track 11
DR10 0.00 dB -12.06 dB 4:57 12-Track 12
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Number of tracks: 12
Official DR value: DR11
Samplerate: 44100 Hz
Channels: 2
Bits per sample: 16
Bitrate: 951 kbps
Codec: FLAC
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One thing that is obvious is that this version is much much louder than either the HDTracks and the MoFi version. What does surprise me is that there are several tracks on this version that have a higher dynamic range the the MoFi version.