One of the things I did with buckle, which may help you when looking at other bootstrapbase themes, was to create an unminified version of the bootstrapbase css at the time (It has moved on from there but as Buckle uses bootstrapbase as a parent it will have inherited those changes), which made it much easier to see what was happening.
Minified code may be the way to go for finished themes (it's faster for one thing), but I personally find it easier to work with the unminified version while developing and for themes which I intend to build onto. You can do this with some of the options when processing the less files - if you are using less files for your theme. You can then reprocess them as minified when you are happy that everything is fine.
The other thing to bear in mind, which may be good or not depending on your view (I obviously think it is ) and what you want, is that the buckle theme uses the same layout/css for responsive layouts as krystle and zebra, rather than the grid framework used by bootstrapbase and other bootstrap themes.
Hope you like Buckle though