No worries, Russ. Actually, I got confused and was addressing Tom, but thinking he had the Ketron (what DID he come from, BTW?), not you.
I was just a bit more concerned about the fact that several of those questions were answered by the manual, fairly easily. I'm pretty sure you (Russ) have figured out pretty carefully what works and doesn't work for you, but Tom's questions seemed a bit unresearched, and I'm just trying to counsel patience if he HASN'T exhausted the manual and places like here and roland-arranger.com.
That is all... You might answer the same way if someone was talking about giving up on the MidJay, when it was obvious they hadn't read the manual, yet! Now, some of Tom's questions WEREN'T easily answered by the main manual, but some of them WERE. And, despite the ribbing, both here and at roland-arranger, we DO answer as many questions as we can, but no-one likes to be used as a substitute for reading the manual, we like to feel we come AFTER that process!
Everybody has to use what they are personally the most comfortable with (no arguments there!), but if you are unaware of many aspects of the OS, you'll never know IF a particular arranger WOULD work for you or not!
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An arranger is just a tool. What matters is what you build with it..!