the er-4p headphones that i currently have in my ears right now are doing a great job blocking out this pretty noisy room.
I use them when i mow the lawn, and as long as the music is at a decent volume (not whisper quiet), I can barely, and most of the time not at all, hear the lawnmower. If i were to use the foam tips, which have better noise reduction than the flange tips, im sure itd be even better
I'm sure theres more, my personal experiences with nicer than 50 dollar headphones is very limited, but I went with these on recommendation from the guys over at
www.head-fi.org, and I must say i absolutely love them!
-Chap