That this is an arranger forum doesn't dictate that you HAVE to love them..!

Just use them.

Like most technology, they can delight and infuriate at the same time.

We all here can only answer for ourselves. It is unlikely any two people here use them in exactly the same way, for exactly the same purposes, which if we aren't careful, can easily lead to culture clashes and misunderstanding. You use your arranger in a supportive role for your singing. I happen to agree fully with this. They do an exceptional job of supporting good singers, and are far easier to run onstage and are more flexible than most WS's. Put me down as a fan of the type, as I have been playing live, solo and duo using one since the G800 (and used an RA90 as part of my MIDI rig prior to that!). So that's close to 20 years!

But... they have their strengths, and they have their weaknesses. It doesn't mean I hate them, just because I'm willing to call them out on their weaknesses..! But particularly with jazz, which is, at its best, supposed to be an improvisational, free form, spur of the moment art form, tying your performance to a repetitive, unlistening machine is compromising the music. While YOUR contribution can be as jazzy as you can play, that backing isn't going to vary a hair. There's only so much you can make an arranger do on the spur of the moment.

Should you decide to double time it, or half time it, unless you have styles already set up to do that (and have them placed where it is easy to select them) that arranger is going to plow on unheeding. And that's just ONE of the myriad things you might do improvising jazz...

Carefully tailor what you do to what the machine does, and yes, you can sound really good. But all the adjustment needs to be done in that direction. The arranger is never going to listen to YOU, and spontaneously adjust what it is doing to better suit you. But a live band, a GOOD live band will, every time!

Don't ever put me down as a hater. Just as a realistic user...!