Let me respond to some questions

I believe the RAM sounds are standard waves,although there may be some Ketron priorities..
Initially, the sample is loaded (partial) and then streamed from the SSD. Similar to the MediaStation (Giga sample).
My comparison to features also found on the G70..was not a negative comment about the SD7..the comparison was because I have hands on experience with the G70 ..
The comment about outclassing the competition was in relationship to editing SMF's, Styles etc...ease of use..make up tools and covers..still hard to beat..
If you read the content of my review, it is favorable to the SD7...The only negative was the harmony I heard and I also said give the guys a chance to set it up..

I still believe Roland harmonizer has the right approach, reads the chord automatically from any application..style, SMF, Vocoder (real time harmony)..with easy selections..
Yamaha , Korg and Ketron never excited me in the harmonizer area..

Bill, the ipad apps help the BK9, but a touch screen would benefit all aspects, not just a few editable sections...especially make up tools...And I don't want any Apple products..it would have to be Android

If I were in the market for a new keyboard...in this price range, The SD7 woulkd be at the top of my list, edging out the Korg PA3x...although I would have to think about a bump in dollars for an Audya..
PA3x and Audya would give me the 76 keys I prefer...SD7 gives you decent speakers and superior touch screen..