I thought this too until I got the RS1i's. But they are still very smooth and more so than any other (not including the RS1i for those that are easily confused) Grado I have listened to which is all of them from the RS1i and below.
These are a perfect Grado for anyone that has ever complained about Grado being too bright and/or lacking bass. The BM is neither.
Edited by ArmAndHammer - 12/29/13 at 12:18pm