My two cents
I have played with bands and recently have played as a solo act performing my own music for the most part. I enjoy playing piano and singing, but find that while people usually enjoy my songs you are limited by what you can pull off by yourself. So I recently got interested in arrangers and so far I love them. I can immediately play songs of mine that need accompianment that I had almost given up on. I can also sound like I'm in a band which in some ways I miss.
I think that as far as entertainment and a "joy" factor go I prefer an arranger.
As far as I'm concerned being in a band is not worth the aggravation especially as I get older. Besides some of the other more obvious issues with a band are the following:
Moving equipment
Long setups and takedowns
Teaching others songs
Endless practice
People quitting
Work schedules
Less money (after splitting)
Worrying about others making mistakes not to mention your own
Finding people who want to do the same music
Ending up doing most of the work i.e. booking,advertising.
I'm happy playing solo and I would have to say that an arranger gives me much more versatility and appreciation from people who want to be entertained.
Just my opinion
Don Adams
www.donadams.ca Just my