I need to create a quote and invoicing template for my company. Should I use Illustrator or InDesign?
You should use QuickBooks.
Thanks Bob and good point for invoicing 😂
However, the quote needs to include some technical detail and a design. It's a complex product and the volumes are low.
If your choices are InDesign and Illustrator, I would use InDesign, but you should use the one you are most comfortable with.
I would save as PDF and use Acrobat to convert to a fillable form, too, I think.