So, to preface, my technique is somewhat "unbalanced"; my octaves are good, my thirds and sixths are okay (though nowhere their respective Chopine etudes), my scales are "meh", my arpeggios are bordering on god awful, among other ways I could describe them

So I listened to the few of the Brahms exercises on YT that I could, and they seem beneficial.
Anyone have any stories with them? Any preferred edition?
Many thanks!