Assuming that the BK-5 is in many parts identical to the BK-7m, it is really a good instrument. But obviously the E-A7 is really superior and has some features which go beyond the 800-900 euro segment, e.g.:
- 1,500 on-board sounds (vs. about 1,100)
- over 600 styles (vs. about 350)
- WAV sample expandibility
- 2 displays.

However, as a very critical remark: Roland, if you are able to release a completely new mid-class arranger, WHY don't you care about keeping promises and release tone expansions for the BK-9? ("The BK-9 is equipped with a user storage designed for future tone expansions"...) Releasing new models and forgetting about the ones released 2 years ago, that's a way to lose former buyers, I have to repeat.