Gary, I had to have one to play my sax and my i30 has the best of any. I didn't have to record all 15 or more choruses to play some of the blues chord charts that all serious jazz players perform.

I said this before but I don't think anyone is getting it. I record the first 8 bars copy and paste them for the next 8 bars and just change the turn around for the bridge It's different then the first turn a round 99% of the time.

Then I paste the first 8 bars again after the bridge and I have one complete song. Then I can copy the whole tune and paste it for as many choruses as I need. After a few tunes of course with many chords plus passing chords I could still do a tune in under an hour. I could do a three chord tune in 5 minutes. Ha ha!

On a gig, all I need is my keyboard speakers mic etc. Sing and play a few tunes. Switch the sequencer on (No Laptop or any other gear necessary) stand, pick up my sax and jam with the sequence.

After your question, I finally understand why no one here could understand what I was looking for or had any clue of what I needed when I was shopping a keyboard that could do everything. The i30.

With the keyboards of that time, I would have had to record all 5 or 6 choruses of "All The Things You Are" without any mistakes. There's not a player here on the forum that could do that unless Hank Jones, McCoy Tyner or maybe a Bill Evans is hiding here. Ha ha.

None of the arrangers of that time could copy and paste like the i30. I could even go back where I might need to fix a wrong chord and just record that one chord in the middle of the tune effortlessly.

Y'all still don't get it, right? Maybe Diki, I said maybe Diki gets it and maybe he doesn't get it and that's OK Diki. You really need to be a solo instrumentalist who desperately wants to be a OMB to have to do it for yourself to get it. Even a hi-tech expert may not be able to grasp the concept. It does not, or I am not implying that y'all are stupid. The point of this is it is comparable to supply and demand. If you want to, the need is there and you do this, you will understand.

Read Frans' post 50 times and it will help you to understand, maybe.
Don't forget I only played the sax but knew chord theory. I had to learn to play the chords with my left hand, learn the keyboard and the lyrics and figure out this all out from scratch.