To work out the notes, you might as well use Dover.
Barenreiter has generally very good notes and are very well researched, although I have not reviewed their BWV 988. Their partitas and WTC are solid.
Henle is visually very pleasing, with its big fat notes. Their Bach is much better researched than their edition of other composers (Beethoven, for example, which is frankly unacceptable). again, I have not reviewed their BWV 988, but the partitas and the WTC are very good.
Barenreiter is better generally at acknowledging their editorial choices directly on the score. Henle often gives you a chosen version on the score and buries the other options in the preface.
You should not be lazy about this and study various sources. And after you do, I find it of little importance what it is you have in front of you when you are practicing.
BTW, Busoni's "suggestions" on the Goldberg Variations are particularly outlandish. You should seriously not start your research there, unless what you want to play is the Bach-Busoni Goldberg Variations (which you may!)
One more note, check out the articles on Bach's handexemplar (like
https://www.jstor.org/pss/831018) and the Quintillian connection (
https://www.qub.ac.uk/~tomita/essay/cu4.html). Live happily!