In a quote, it would be good to have "-" before the discount and "%" after. Because if you just have "5.00", you don't really know what it is. Also, if I don't have a discount (0.00), it's better not to display it. Because it indicates that the customer doesn't get any discount on these products. Finally, it could be interesting to have the possibility to display the note on the product in the quote (or if the note is considered as private, have a quick description for special explanations).