Asking about a specific editor of the 35 Beethoven Sonatas....?

ABRSM stands for the Associated Board of the Royal Schools of Music, and is the largest music exam board in the UK. They publish scores and books for academic purposes and are generally well respected.
There is a discussion amongst pianists about the Beethoven edition here http://www.pianoworld.com/forum/ubbthreads.php/ubb/showflat/Forum/2/topic/017463/Number/0/site_id/1#import
and the NY Times article here
http://www.nytimes.com/2008/01/20/arts/music/20whit.html?pagewanted

I can't say whether they're good, not knowing much about music, but it's the edition I use. Contrary to what you've heard, it has fingerings, and very useful ones at that. They fit the hand really well. Each volume comes with a booklet that details the technical and musical difficulties, differences between editions, etc., which are probably really useful if you're a serious pianist (unlike me - I just play the sonatas to entertain myself, so I rarely read them).