Both Henle editions are horribly overrated. I use Dover, which is in fact very clean, although one day, when Barenreiter gets one out, I shall get it (no Barenreiter at this moment, i think. let me know otherwise!)
Tecla is also very interesting, but overpriced. We should make a project to collect a bunch of early editions and post them in the site. That would be reason to get Golden merbership (which at the moment I consider on par with Henle's editions

)
I consult Peter's Arrau edition often, and the Bulow Schirmer edition, greatly maligned by the urtext generation, has great ideas that came from probably the most scholarly student of the best read and greatest student of the only important and most trusted student of Beethoven.
There is no Czerny edition (but consult his treatise on how to play Beethoven), and no Liszt edition, so the Bulow edition is a very important document that people often don't understand and underappreciate.